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Old 10-29-2010, 09:32 AM   #11
Turhan's Bey Company
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Default Re: [Space] GURPS Handbook of the Planets

Quote:
Originally Posted by Flyndaran View Post
I for one appreciate the in depth attention to accuracy and sheer hard work he put in for us ungrateful slobs.
This. It's an excellent tool, and I do not doubt that it took a daunting amount of work to produce.

Quote:
Originally Posted by zorg View Post
(Do you, by any chance, have a game aid which will allow me to generate one or two additional players?)
That really requires a hardware rather than a software solution, and I'm going to stop before taking that joke any further.
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Old 10-29-2010, 09:55 AM   #12
zorg
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Default Re: [Space] GURPS Handbook of the Planets

Quote:
Originally Posted by Turhan's Bey Company View Post
That really requires a hardware rather than a software solution, and I'm going to stop before taking that joke any further.
I was really looking for a short-term solution anyway.
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Old 10-29-2010, 10:48 AM   #13
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Default Re: [Space] GURPS Handbook of the Planets

Quote:
Originally Posted by Brett View Post
I'm out of here.
Brett,

Glad to see you back.

Too bad you aren't staying.

Illegitimi[1] non carborundum.

Regards,
Martin
[1] Myself included.
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Old 10-29-2010, 03:58 PM   #14
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Default Re: [Space] GURPS Handbook of the Planets

Quote:
Originally Posted by zorg View Post
I was really looking for a short-term solution anyway.
The internets? I think that if I suffered from a paucity of players, I'd seriously try to run a game with MapTools (or similar).

Quote:
Originally Posted by martinl View Post
Brett,

Glad to see you back.

Too bad you aren't staying.

Illegitimi[1] non carborundum.

Regards,
Martin
[1] Myself included.
QFT.
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Old 10-30-2010, 06:32 AM   #15
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Default Re: [Space] GURPS Handbook of the Planets

In the 1st 1,000 systems in Universe 1, the these have affinity 5+.
  • System 12 world IV, a cool standard garden planet with 60% hydrographics, standard breathable atmosphere, and 0.8 gee. G1 V star. Hab: 8 RVM: 0. Day: 23.3 hours.
  • System 390 world I, a cool standard garden planet with 75% hydrographics, standard breathable atmosphere, and 0.99 gee. M4 V star. Hab: 8 RVM: 0. Tide-locked.
  • System 877 world I, a warm standard garden planet with 75% hydrographics, standard breathable atmosphere, and 0.8 gee. M2 V star. Hab: 8 RVM: 0. Tide-locked.
  • System 257 world III, a warm standard garden planet with 60% hydrographics, standard marginal atmosphere, and 0.81 gee. G2 V star. Hab: 7 RVM: 1. Day: 24.4 hours.
  • System 397 world I, a normal standard garden planet with 60% hydrographics, standard marginal atmosphere, and 0.8 gee. M4 V star. Hab: 7 RVM: 1. Day: 1589.8 hours.
  • System 476 world III, a tropical standard garden planet with 65% hydrographics, standard breathable atmosphere, and 1.04 gee. K2 V star. Hab: 8 RVM: -1. Tide-locked.
  • System 90 world III, a cool standard garden planet with 90% hydrographics, standard marginal atmosphere, and 0.59 gee. K5 V star. Hab: 7 RVM: 0. Day: 6645.7 hours.
  • System 311 world VI, a chilly standard garden planet with 50% hydrographics, standard breathable atmosphere, and 0.92 gee. F5 V star. Hab: 7 RVM: 0. Day: 16.7 hours.
  • System 401 world I, a normal standard garden planet with 80% hydrographics, dense marginal atmosphere, and 0.98 gee. M1 V star. Hab: 7 RVM: 0. Tide-locked.
  • System 455 world III, a warm standard garden planet with 65% hydrographics, standard marginal atmosphere, and 0.74 gee. K5 V star. Hab: 7 RVM: 0. Tide-locked.
  • System 728 world IV, a cold standard garden planet with 70% hydrographics, standard breathable atmosphere, and 0.8 gee. K2 V star. Hab: 7 RVM: 0. Day: 35.7 hours.
  • System 822 world IV, a cool standard garden planet with 90% hydrographics, thin breathable atmosphere, and 0.7 gee. G2 V star. Hab: 7 RVM: 0. Day: 579.1 hours.
  • System 893 world II, a normal standard garden planet with 75% hydrographics, standard marginal atmosphere, and 0.92 gee. M1 V star. Hab: 7 RVM: 0. Tide-locked.
  • System 787 world II, a hot standard garden planet with 25% hydrographics, standard breathable atmosphere, and 0.85 gee. M0 V star. Hab: 6 RVM: 1. Tide-locked.
  • System 62 world I, a chilly standard garden planet with 55% hydrographics, standard breathable atmosphere, and 0.95 gee. M1 V star. Hab: 7 RVM: -1. Tide-locked.
  • System 180 world II, a tropical standard garden planet with 80% hydrographics, dense marginal atmosphere, and 1.06 gee. M2 V star. Hab: 7 RVM: -1. Tide-locked.
  • System 241 world II, a cool standard garden planet with 65% hydrographics, standard marginal atmosphere, and 0.73 gee. M1 V star. Hab: 7 RVM: -1. Tide-locked.
  • System 351 world III, a cool standard garden planet with 60% hydrographics, thin breathable atmosphere, and 0.67 gee. G1 V star. Hab: 7 RVM: -1. Day: 655.1 hours.
  • System 48 world I, a cool standard garden planet with 50% hydrographics, thin breathable atmosphere, and 0.89 gee. M2 V star. Hab: 6 RVM: 0. Day: 3423.1 hours.
  • System 59 world VIII, a cold standard garden planet with 90% hydrographics, thin breathable atmosphere, and 0.73 gee. F5 III star. Hab: 6 RVM: 0. Day: 16.7 hours.
  • System 93 world II, a warm large garden planet with 100% hydrographics, very dense marginal atmosphere, and 1.45 gee. M2 V star. Hab: 6 RVM: 0. Day: 2357 hours.
  • System 255 world II, a hot standard garden planet with 65% hydrographics, standard marginal atmosphere, and 0.71 gee. K5 V star. Hab: 6 RVM: 0. Tide-locked.
  • System 406 world II, a normal standard garden planet with 90% hydrographics, dense marginal atmosphere, and 0.8 gee. M2 V star. Hab: 6 RVM: 0. Tide-locked.
  • System 425 world II, a chilly standard garden planet with 35% hydrographics, standard marginal atmosphere, and 0.84 gee. M2 V star. Hab: 6 RVM: 0. Tide-locked.
  • System 434 world II, a hot standard garden planet with 45% hydrographics, standard breathable atmosphere, and 0.98 gee. M1 V star. Hab: 6 RVM: 0. Tide-locked.
  • System 469 world III, a tropical standard garden planet with 45% hydrographics, standard marginal atmosphere, and 0.72 gee. K2 V star. Hab: 6 RVM: 0. Tide-locked.
  • System 694 world I, a cool standard garden planet with 90% hydrographics, very thin breathable atmosphere, and 0.71 gee. M6 V star. Hab: 6 RVM: 0. Day: 599.7 hours.
  • System 695 world IV, a very cold standard garden planet with 75% hydrographics, standard marginal atmosphere, and 0.69 gee. K2 V star. Hab: 6 RVM: 0. Tide-locked.
  • System 848 world V, a chilly standard garden planet with 60% hydrographics, thin breathable atmosphere, and 0.73 gee. G1 V star. Hab: 6 RVM: 0. Day: 17.1 hours.
  • System 799 world II, a hot standard garden planet with 70% hydrographics, standard marginal atmosphere, and 0.61 gee. M1 V star. Hab: 5 RVM: 1. Day: 2688.9 hours.
  • System 411 world I, a warm standard garden planet with 80% hydrographics, thin breathable atmosphere, and 0.76 gee. M4 V star. Hab: 7 RVM: -2. Day: 1173.3 hours.
  • System 192 world I, a very hot standard garden planet with 65% hydrographics, standard marginal atmosphere, and 0.89 gee. M4 V star. Hab: 6 RVM: -1. Tide-locked.
  • System 509 world IV, a warm standard garden planet with 50% hydrographics, thin breathable atmosphere, and 0.69 gee. G1 V star. Hab: 6 RVM: -1. Day: 15.3 hours.
  • System 519 world I, a chilly standard garden planet with 90% hydrographics, very thin breathable atmosphere, and 0.63 gee. M2 V star. Hab: 6 RVM: -1. Day: 3313.1 hours.
  • System 530 world IIc, a chilly standard garden moon with 80% hydrographics, thin marginal atmosphere, and 0.56 gee. G0 V star. Hab: 6 RVM: -1. Day: 154.7 hours.
  • System 568 world III, a normal standard garden planet with 45% hydrographics, standard marginal atmosphere, and 0.92 gee. K5 V star. Hab: 6 RVM: -1. Tide-locked.
  • System 648 world III, a frozen standard garden planet with 75% hydrographics, standard breathable atmosphere, and 0.96 gee. M0 V star. Hab: 6 RVM: -1. Tide-locked.
  • System 756 world V, a normal standard garden planet with 80% hydrographics, very thin breathable atmosphere, and 0.76 gee. G0 V star. Hab: 6 RVM: -1. Day: 17.7 hours.
  • System 865 world II, a warm standard garden planet with 25% hydrographics, standard marginal atmosphere, and 0.9 gee. M2 V star. Hab: 6 RVM: -1. Tide-locked.
  • System 118 world II, a very cold standard garden planet with 60% hydrographics, thin breathable atmosphere, and 0.8 gee. G2 V star. Hab: 5 RVM: 0. Day: 29.6 hours.
  • System 144 world II, a tropical standard garden planet with 100% hydrographics, standard marginal atmosphere, and 0.97 gee. G2 V star. Hab: 5 RVM: 0. Day: 50.3 hours.
  • System 191 world V, a very cold standard garden planet with 90% hydrographics, thin breathable atmosphere, and 0.76 gee. G0 V star. Hab: 5 RVM: 0. Day: 13.4 hours.
  • System 234 world II, a chilly standard garden planet with 20% hydrographics, very thin breathable atmosphere, and 0.6 gee. M1 V star. Hab: 5 RVM: 0. Tide-locked.
  • System 251 world I, a tropical standard garden planet with 30% hydrographics, very thin breathable atmosphere, and 0.74 gee. M4 V star. Hab: 5 RVM: 0. Tide-locked.
  • System 272 world I, a normal standard garden planet with 50% hydrographics, very thin breathable atmosphere, and 0.91 gee. M4 V star. Hab: 5 RVM: 0. Tide-locked.
  • System 330 world II, a cool standard garden planet with 50% hydrographics, thin marginal atmosphere, and 0.57 gee. K2 V star. Hab: 5 RVM: 0. Day: 10095 hours.
  • System 436 world II, a cool standard garden planet with 20% hydrographics, very thin breathable atmosphere, and 0.74 gee. K4 V star. Hab: 5 RVM: 0. Tide-locked.
  • System 567 world I, a cool standard garden planet with 40% hydrographics, very thin breathable atmosphere, and 0.75 gee. M6 V star. Hab: 5 RVM: 0. Tide-locked.
  • System 582 world III, a frozen standard garden planet with 60% hydrographics, thin breathable atmosphere, and 0.97 gee. K2 V star. Hab: 5 RVM: 0. Day: 31.8 hours.
  • System 643 world III, a cool standard garden planet with 50% hydrographics, dense marginal atmosphere, and 1.04 gee. G0 V star. Hab: 5 RVM: 0. Day: 15.5 hours.
  • System 653 world II, a tropical standard garden planet with 40% hydrographics, very thin breathable atmosphere, and 0.84 gee. M1 V star. Hab: 5 RVM: 0. Tide-locked.
  • System 700 world III, a very cold standard garden planet with 90% hydrographics, thin breathable atmosphere, and 0.71 gee. M0 V star. Hab: 5 RVM: 0. Day: 5886.1 hours.
  • System 712 world II, a cool standard garden planet with 10% hydrographics, very thin breathable atmosphere, and 0.8 gee. M2 V star. Hab: 5 RVM: 0. Tide-locked.
  • System 773 world III, a very cold standard garden planet with 55% hydrographics, standard breathable atmosphere, and 0.95 gee. M1 V star. Hab: 5 RVM: 0. Tide-locked.
__________________

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Nod head. Get treat.

Last edited by Agemegos; 10-30-2010 at 09:04 AM.
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Old 10-30-2010, 06:52 AM   #16
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Default Re: [Space] GURPS Handbook of the Planets

In the 2nd thousand systems in Universe 1, these have habitability 5+
  • System 1006 world I, a normal standard garden planet with 65% hydrographics, standard breathable atmosphere, and 0.77 gee. M1 V star. Hab: 8 RVM: -1. Tide-locked.
  • System 1047 world I, a cool standard garden planet with 90% hydrographics, standard breathable atmosphere, and 0.92 gee. M5 V star. Hab: 8 RVM: 0. Day: 981.5 hours.
  • System 1381 world I, a warm standard garden planet with 90% hydrographics, dense marginal atmosphere, and 0.92 gee. M4 V star. Hab: 8 RVM: 0. Tide-locked.
  • System 1519 world III, a warm standard garden planet with 80% hydrographics, standard breathable atmosphere, and 1 gee. K2 V star. Hab: 8 RVM: 0. Day: 6285.6 hours.
  • System 1531 world I, a normal standard garden planet with 90% hydrographics, standard breathable atmosphere, and 1.05 gee. M1 V star. Hab: 8 RVM: -1. Day: 3173.6 hours.
  • System 1585 world II, a cool standard garden planet with 70% hydrographics, standard breathable atmosphere, and 0.81 gee. K5 V star. Hab: 8 RVM: 0. Day: 5508.2 hours.
  • System 1886 world VII, a tropical standard garden planet with 60% hydrographics, standard breathable atmosphere, and 0.84 gee. G0 III star. Hab: 8 RVM: 0. Day: 13.3 hours.
  • System 1995 world II, a cool standard garden planet with 75% hydrographics, standard breathable atmosphere, and 0.92 gee. M2 V star. Hab: 8 RVM: 0. Tide-locked.
  • System 1041 world IV, a chilly standard garden planet with 60% hydrographics, standard marginal atmosphere, and 0.79 gee. K2 V star. Hab: 7 RVM: -1. Day: 293.2 hours.
  • System 1043 world IIb, a cold standard garden moon with 90% hydrographics, standard breathable atmosphere, and 0.87 gee. G0 V star. Hab: 7 RVM: 1. Day: 59.8 hours.
  • System 1206 world I, a cold standard garden planet with 80% hydrographics, standard breathable atmosphere, and 0.87 gee. M1 V star. Hab: 7 RVM: 0. Day: 4574 hours.
  • System 1209 world I, a normal standard garden planet with 60% hydrographics, thin breathable atmosphere, and 0.57 gee. M4 V star. Hab: 7 RVM: 0. Day: 1276.3 hours.
  • System 1265 world II, a tropical standard garden planet with 55% hydrographics, standard breathable atmosphere, and 0.9 gee. M0 V star. Hab: 7 RVM: -2. Tide-locked.
  • System 1427 world V, a warm standard garden planet with 90% hydrographics, thin breathable atmosphere, and 0.73 gee. G0 IV star. Hab: 7 RVM: 0. Day: 503.2 hours.
  • System 1484 world II, a chilly standard garden planet with 75% hydrographics, standard marginal atmosphere, and 0.78 gee. M1 V star. Hab: 7 RVM: 0. Tide-locked.
  • System 1491 world III, a chilly standard garden planet with 50% hydrographics, standard breathable atmosphere, and 0.81 gee. M0 V star. Hab: 7 RVM: 0. Day: 5508.4 hours.
  • System 1495 world V, a normal standard garden planet with 90% hydrographics, standard marginal atmosphere, and 0.82 gee. G0 V star. Hab: 7 RVM: 0. Day: 14.7 hours.
  • System 1538 world I, a cool standard garden planet with 45% hydrographics, standard breathable atmosphere, and 0.75 gee. M1 V star. Hab: 7 RVM: 0. Tide-locked.
  • System 1540 world IV, a chilly standard garden planet with 90% hydrographics, thin breathable atmosphere, and 0.73 gee. G0 IV star. Hab: 7 RVM: 0. Day: 13.5 hours.
  • System 1608 world V, a warm standard garden planet with 50% hydrographics, standard breathable atmosphere, and 1.09 gee. G0 V star. Hab: 7 RVM: -1. Day: 12 hours.
  • System 1647 world I, a cool standard garden planet with 90% hydrographics, thin breathable atmosphere, and 0.82 gee. M4 V star. Hab: 7 RVM: -1. Day: 1403.1 hours.
  • System 1829 world I, a chilly standard garden planet with 75% hydrographics, standard marginal atmosphere, and 0.83 gee. M6 V star. Hab: 7 RVM: 0. Tide-locked.
  • System 1834 world IIIa, a cold standard garden moon with 70% hydrographics, standard breathable atmosphere, and 1.03 gee. G0 V star. Hab: 7 RVM: -1. Day: 222 hours.
  • System 1896 world I, a normal standard garden planet with 90% hydrographics, standard marginal atmosphere, and 0.74 gee. M1 V star. Hab: 7 RVM: 0. Day: 3354.1 hours.
  • System 1105 world II, a tropical standard garden planet with 70% hydrographics, thin marginal atmosphere, and 0.64 gee. M1 V star. Hab: 6 RVM: 0. Day: 2885.9 hours.
  • System 1128 world IV, a cold standard garden planet with 70% hydrographics, thin breathable atmosphere, and 0.65 gee. K2 V star. Hab: 6 RVM: -2. Day: 1609.4 hours.
  • System 1190 world II, a cold standard garden planet with 70% hydrographics, thin breathable atmosphere, and 0.68 gee. M2 V star. Hab: 6 RVM: 0. Day: 3671.5 hours.
  • System 1199 world II, a cold standard garden planet with 55% hydrographics, standard breathable atmosphere, and 0.92 gee. M1 V star. Hab: 6 RVM: 0. Tide-locked.
  • System 1284 world I, a cold standard garden planet with 90% hydrographics, thin breathable atmosphere, and 0.69 gee. M2 V star. Hab: 6 RVM: -1. Day: 3712.3 hours.
  • System 1314 world IVa, a hot standard garden moon with 70% hydrographics, standard marginal atmosphere, and 0.85 gee. G0 IV star. Hab: 6 RVM: 0. Day: 66.7 hours.
  • System 1317 world II, a warm standard garden planet with 35% hydrographics, standard marginal atmosphere, and 0.66 gee. M2 V star. Hab: 6 RVM: -1. Tide-locked.
  • System 1354 world III, a hot standard garden planet with 25% hydrographics, standard breathable atmosphere, and 1.07 gee. K2 V star. Hab: 6 RVM: 0. Tide-locked.
  • System 1371 world II, a cool standard garden planet with 35% hydrographics, standard marginal atmosphere, and 0.69 gee. M1 V star. Hab: 6 RVM: 0. Tide-locked.
  • System 1397 world I, a warm standard garden planet with 45% hydrographics, standard marginal atmosphere, and 0.88 gee. M2 V star. Hab: 6 RVM: 0. Tide-locked.
  • System 1456 world II, a warm standard garden planet with 55% hydrographics, standard marginal atmosphere, and 0.81 gee. M2 V star. Hab: 6 RVM: 0. Tide-locked.
  • System 1555 world II, a chilly standard garden planet with 90% hydrographics, very thin breathable atmosphere, and 0.52 gee. M2 V star. Hab: 6 RVM: 1. Day: 3466.4 hours.
  • System 1599 world IV, a cold standard garden planet with 80% hydrographics, thin breathable atmosphere, and 0.94 gee. K2 V star. Hab: 6 RVM: -1. Day: 9849.5 hours.
  • System 1966 world IV, a hot standard garden planet with 80% hydrographics, dense marginal atmosphere, and 0.95 gee. G0 IV star. Hab: 6 RVM: 0. Day: 17.2 hours.
  • System 1973 world V, a warm standard garden planet with 100% hydrographics, standard breathable atmosphere, and 0.92 gee. G0 V star. Hab: 6 RVM: 0. Day: 30 hours.
  • System 1012 world I, a tropical standard garden planet with 40% hydrographics, dense marginal atmosphere, and 0.89 gee. M6 V star. Hab: 5 RVM: 0. Tide-locked.
  • System 1060 world IV, a cold standard garden planet with 50% hydrographics, thin breathable atmosphere, and 0.74 gee. K2 V star. Hab: 5 RVM: 2. Day: 24.6 hours.
  • System 1077 world I, a chilly standard garden planet with 40% hydrographics, very thin breathable atmosphere, and 0.65 gee. M2 V star. Hab: 5 RVM: -1. Tide-locked.
  • System 1331 world II, a normal standard garden planet with 40% hydrographics, very thin breathable atmosphere, and 0.69 gee. M1 V star. Hab: 5 RVM: 0. Tide-locked.
  • System 1385 world III, a very cold standard garden planet with 70% hydrographics, thin breathable atmosphere, and 0.69 gee. K5 V star. Hab: 5 RVM: 0. Day: 7930 hours.
  • System 1401 world V, a warm standard garden planet with 80% hydrographics, thin marginal atmosphere, and 0.57 gee. G0 IV star. Hab: 5 RVM: 0. Day: 517.4 hours.
  • System 1470 world II, a tropical standard garden planet with 10% hydrographics, very thin breathable atmosphere, and 0.79 gee. M1 V star. Hab: 5 RVM: -2. Tide-locked.
  • System 1472 world III, a normal standard garden planet with 30% hydrographics, very thin breathable atmosphere, and 0.61 gee. K5 V star. Hab: 5 RVM: 1. Tide-locked.
  • System 1604 world II, a normal standard garden planet with 100% hydrographics, standard marginal atmosphere, and 0.92 gee. M0 V star. Hab: 5 RVM: 0. Day: 3546.5 hours.
  • System 1649 world I, a cold standard garden planet with 70% hydrographics, thin marginal atmosphere, and 0.53 gee. M2 V star. Hab: 5 RVM: -1. Day: 4485.7 hours.
  • System 1682 world II, a warm standard garden planet with 10% hydrographics, very thin breathable atmosphere, and 0.79 gee. M2 V star. Hab: 5 RVM: 0. Tide-locked.
  • System 1817 world I, a cold standard garden planet with 35% hydrographics, standard marginal atmosphere, and 0.75 gee. M6 V star. Hab: 5 RVM: 0. Tide-locked.
  • System 1842 world II, a normal standard garden planet with 70% hydrographics, very dense marginal atmosphere, and 0.98 gee. M2 V star. Hab: 5 RVM: 0. Tide-locked.
  • System 1908 world II, a chilly standard garden planet with 100% hydrographics, thin breathable atmosphere, and 0.81 gee. M2 V star. Hab: 5 RVM: 0. Day: 2809.4 hours.
  • System 1947 world Id, a cold standard garden moon with 50% hydrographics, thin breathable atmosphere, and 0.82 gee. G0 V star. Hab: 5 RVM: 0. Day: 183.8 hours.
  • System 1997 world II, a chilly standard garden planet with 30% hydrographics, very thin breathable atmosphere, and 0.79 gee. M1 V star. Hab: 5 RVM: 0. Tide-locked.
__________________

Decay is inherent in all composite things.
Nod head. Get treat.

Last edited by Agemegos; 10-30-2010 at 09:05 AM.
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Old 10-30-2010, 08:16 AM   #17
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Default Re: [Space] GURPS Handbook of the Planets

Among Systems 2,001 to 12,000 of Universe 1, the following are of great interest:
  • System 6952, a F5 V star with 2 habitable planets
  • System 7946, a K4 V star with 2 habitable planets
  • System 3791, a M1 V star with 2 habitable planets
  • System 6190, a M1 V star with 2 habitable planets
  • System 11908, a K2 V star with 2 habitable planets
  • System 7823, a G0 V star with 2 habitable planets
  • System 7868, a G0 V star with 2 habitable planets
  • System 8770, a M1 V star with 2 habitable planets
  • System 9163, a K4 V star with 2 habitable planets
  • System 11284, a K4 V star with 2 habitable planets
  • System 5250, a G0 IV star with 2 habitable planets
  • System 5794, a G1 V star with 2 habitable moons
  • System 11637, a G2 V star with a habitable planet and a habitable moon
  • System 10980, a G0 III star with a habitable planet and a habitable moon
__________________

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Nod head. Get treat.

Last edited by Agemegos; 10-30-2010 at 09:07 AM.
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Old 10-30-2010, 09:22 AM   #18
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Default Re: [Space] GURPS Handbook of the Planets

Let's take a look at that System 5794:
Code:
Primary star
Name of star:              
system number: 5794           
class of star: G1 V                                   
mass:          1.05   M_                                
luminosity:    1.53   L_                              
age:           5.6    Gya.                              
diameter:      0.0110 a.u.   

Planets & moons

ID#     orbit radius    world type                  size  mass   grav. atmosphere              hydrograph.  temp. climate   solar day Hab. RVM  Affinity
(AU)(10,000 km)                                     (D_)  (M–)   (g.)                                       (C)             (hours)
I         0.18          large gas giant             12    600     3.9  superdense corrosive                                 infinite              
                        1 moonlet                                                                            428  infernal              0   -1   -1
II        0.33          medium gas giant            11    300     2.6  superdense corrosive                                 3285                  
III       1.5           large gas giant             12    600     3.9  superdense corrosive                                   164                 
                        6 moonlets                                                                            -28 very cold             0    1    1
IIIa              127   standard garden moon         0.85   0.56  0.77 standard breathable     100% water     -24 very cold   164       4    0    4
IIIb              155   small rock moon              0.55   0.11  0.38 none                                   -31 frozen      221       0    0    0
IIIc              185   standard garden moon         0.80   0.45  0.72 thin breathable         50% water       -4 chilly      289       6    0    6
IIId              220   small rock moon              0.45   0.07  0.36 none                                   -31 frozen      379       0    0    0
                        1 moonlet                                                                             -28 very cold             0   -1   -1
IV        6.5           small gas giant              2.9   10     1.2  superdense corrosive                                    99.5               
                        4 moonlets                                                                           -156 frozen                0    0    0
IVa                15   tiny sulfur moon             0.28   0.01  0.11 none                                  -180 frozen       49.2    -2    0   -2
IVb                23   small ice moon               0.47   0.04  0.19 dense mildly toxic      60% h'carb.   -153 frozen       99.5    -1    0   -1
                        5 moonlets                                                                           -156 frozen                0    0    0
V        12             small gas giant              4.5   20     0.99 superdense corrosive                                   493                 
                        7 moonlets                                                                           -188 frozen                0    0    0
Va                 86   standard ice moon            0.50   0.12  0.45 very thin suffocating                 -183 frozen      493       0    0    0
                        3 moonlets                                                                           -188 frozen                0    0    0
VI       21             small gas giant              3.9   15     1.0  superdense corrosive                                   115                 
                        6 moonlets                                                                           -208 frozen                0   -1   -1
VIa                30   tiny ice moon                0.19   0.00  0.09 none                                  -215 frozen      115       0    0    0
VIb                50   tiny ice moon                0.17   0.00  0.10 none                                  -215 frozen      255       0    0    0
                        1 moonlet                                                                            -208 frozen                0    0    0
VII      34             large gas giant             14    1500    8.1  superdense corrosive                                    28.6               
                        11 moonlets                                                                          -222 frozen                0    0    0
VIIa              104   tiny sulfur moon             0.18   0.00  0.07 none                                  -232 frozen       75.7    -1    0   -1
VIIb              124   tiny ice moon                0.19   0.00  0.09 none                                  -227 frozen       98.7     0    0    0
VIIc              148   small hadean moon            0.29   0.01  0.12 none                                  -237 frozen      129       0    0    0
VIId              180   small hadean moon            0.27   0.01  0.13 none                                  -237 frozen      173       0    0    0
It's that old standard, a gas giant in the Goldilocks zone, with multiple habitable moons.

Here's World IIIa, the watery moon:

Code:
System number:    5794
Planet:           IIIa
Planetology
class of star:    G1 V
mean distance:    1.50    AU
  perihelion:     0.60    AU
  aphelion:       2.40    AU
axial tilt:       
annual period:    1.788   years
                  95.8    local days
local day:        163 h. 43'
orbital period:   6.8     std. days
standard garden moon
diameter:         0.85    x Earth's
                  10,896  km
density:          0.9     x Earth's
                  5.0     g/cm^3
surface gravity:  0.77    g.
                  7.5     m/s^2
escape velocity:  9.1     km/s
vulcanism :       light
tectonics :       none
climate:          very cold
temperature       
  average:        -24     C
  periphelion:    123     C
  aphelion:       -77     C
illumination:     70%     x Earth's
oceans:           100%
  composition:    water
  tidal range:    0.14    m
atmosphere        
  main gases:     N2, O2
  traces &c.:     
  class:          breathable
  pressure:       0.85    bar  (standard)

Sun & moons                                 apparent ...        tide induced
                  class                     size    period
       sun:       G1 V                      0.42°   163.7 hr         0.14  m
       III:       large gas giant           7.15°   fixed

Population & economy

habitability:      4
RVM:               0    resources: average
affinity:          4
settlement type:  
carrying cap.:    218.9 E+6
population:       218.9 E+6   PR:  8
tech level:       10
average income:   G$ 60,300
typical wealth:   average
economic volume:  G$ 13.2 e+12
And here's IIIc, the moon with actual dry land.

Code:
System number:    5794
Planet:           IIIc
Planetology
class of star:    G1 V
mean distance:    1.50    AU
  perihelion:     0.60    AU
  aphelion:       2.40    AU
axial tilt:       
annual period:    1.788   years
                  54.3    local days
local day:        288 h. 41'
orbital period:   11.8    std. days
standard garden moon
diameter:         0.80    x Earth's
                  10,148  km
density:          0.9     x Earth's
                  5.0     g/cm^3
surface gravity:  0.72    g.
                  7.0     m/s^2
escape velocity:  8.5     km/s
vulcanism :       moderate
tectonics :       light
climate:          chilly
temperature       
  average:        -4      C
  periphelion:    143     C
  aphelion:       -57     C
illumination:     70%     x Earth's
oceans:           50%
  composition:    water
  tidal range:    0.13    m
atmosphere        
  main gases:     N2, O2
  traces &c.:     
  class:          breathable
  pressure:       0.72    bar  (thin)

Sun & moons                                 apparent ...        tide induced
                  class                     size    period
       sun:       G1 V                      0.42°   288.7 hr         0.13  m
       III:       large gas giant           4.93°   fixed    


Population & economy

habitability:      6
RVM:               0    resources: average
affinity:          6
settlement type:  
carrying cap.:    759.5 E+6
population:       759.5 E+6   PR:  8
tech level:       10
average income:   G$ 60,300
typical wealth:   average
economic volume:  G$ 45.8 e+12
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Old 10-30-2010, 09:51 AM   #19
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Default Re: [Space] GURPS Handbook of the Planets

Here's System 10980 in Universe 1
Code:
system number: 10980          companion stars: 1
class of star: G0 III          1. mass: 0.40        periapsis:    220 a.u.
mass:          1.1    M_         class: M2 V          apapsis:    880 a.u.
luminosity:    55.00  L_                              
age:           9.6    Gya.                              
diameter:      0.2245 a.u.   

Planets & moons
ID#     orbit radius    world type                  size  mass   grav. atmosphere              hydrograph.  temp. climate   solar day Hab. RVM  Affinity
(AU)(10,000 km)                                     (D_)  (M–)   (g.)                                       (C)             (hours)
          0.26          asteroid belt                                                                       1179  infernal              0    1    1
          0.43          asteroid belt                                                                        841  infernal              0    1    1
I         0.74          small rock planet            0.96   0.61  0.67 none                                  572  infernal  infinite    0    0    0
II        1.1           large chthonian planet       2.0    8.3   2.0  none                                  424  infernal     16.4     0    0    0
III       1.9           standard chthonian planet    1.3    1.8   1.1  none                                  262  infernal     12.6     0   -1   -1
IV        3.6           small rock planet            0.69   0.23  0.48 none                                  111  infernal     16.7     0   -1   -1
V         6.1           large ocean planet           1.4    2.7   1.3  very dense highly toxic 100% water      42 tropical    787      -1    0   -1
Va                 61   standard garden moon         0.56   0.19  0.62 thin breathable         70% water       36 warm        787       7    0    7
VI        9.1           standard garden planet       0.92   0.77  0.92 standard marginal       50% water        5 cool        581       6    0    6
VIa                33   tiny rock moon               0.25   0.01  0.20 none                                   -30 frozen      581       0    0    0
VII      15             small rock planet            0.40   0.06  0.36 none                                   -83 frozen      654       0    0    0
VIIa               15   tiny rock moon               0.16   0.00  0.13 none                                   -81 frozen      654       0    0    0
VIII     47             medium gas giant            11    300     2.6  superdense corrosive                                   184                 
                        7 moonlets                                                                           -166 frozen                0    0    0
VIIIa             110   standard ice moon            0.54   0.15  0.54 very thin suffocating   20% water     -161 frozen      184       0   -1   -1
VIIIb             122   small ice moon               0.42   0.04  0.21 very dense mildly toxic 80% h'carb.   -158 frozen      214      -1    0   -1
VIIIc             139   tiny ice moon                0.09   0.00  0.04 none                                  -178 frozen      262       0   -2   -2
VIIId             156   tiny ice moon                0.37   0.02  0.15 none                                  -178 frozen      312       0    0    0
VIIIe             178   tiny ice moon                0.24   0.01  0.12 none                                  -178 frozen      381       0   -1   -1
Note that Planet V is in a state of mutual tide-lock with its habitable moon, Va. Also, the habitable planet VI is mutually tide-locked to its moon, but the moon is not habitable. The two inner asteroid belts are full of valuable minerals: at TL 10 they will each support a couple of billion belters.

Let's take a look at the sheet for Va.

Code:
System number:    10980
Planet:           Va


Planetology

class of star:    G0 III
mean distance:    6.09    AU
  perihelion:     6.09    AU
  aphelion:       6.09    AU
axial tilt:       
annual period:    14.324  years
                  159.6   local days
local day:        786 h. 33'
orbital period:   32.6    std. days
standard garden moon
diameter:         0.56    x Earth's
                  7,137   km
density:          1.1     x Earth's
                  6.1     g/cm^3
surface gravity:  0.62    g.
                  6.0     m/s^2
escape velocity:  6.6     km/s
vulcanism :       none
tectonics :       none
climate:          warm
temperature       
  average:        36      C
  periphelion:    36      C
  aphelion:       36      C
illumination:     153%    x Earth's
oceans:           70%
  composition:    water
  tidal range:    0.00    m
atmosphere        
  main gases:     N2, O2
  traces &c.:     
  class:          breathable
  pressure:       0.55    bar  (thin)

Sun & moons                                 apparent ...        tide induced
                  class                     size    period
       sun:       G0 III                    2.11°   786.5 hr         0.00  m
       V:         large ocean planet        1.72°   fixed    


Population & economy

habitability:      7
RVM:               0    resources: average
affinity:          7
settlement type:  
carrying cap.:    813.9 E+6
population:       813.9 E+6   PR:  8
tech level:       10
average income:   G$ 67,000
typical wealth:   average
economic volume:  G$ 54.5 e+12
The sky here is going to be pretty. Not only is there that M2 stalking slowly around the outer system, but the primary looks about four times as big as the Sun does from Earth, and Planet V is fixed in the sky and looks three times the size of Earth's Moon.

Note that despite Planet V's strong tidal effects of Moon Va, the resulting tides do not rise or fall. That's because Va is tide-locked, and does not rotate through its tidal bulges. the mantle will have time to adjust fully, and Va will be the same shape as its oceans (i.e. prolate on the axis aligned with V).
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Last edited by Agemegos; 10-30-2010 at 09:56 AM.
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Old 10-30-2010, 10:56 AM   #20
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Default Re: [Space] GURPS Handbook of the Planets

Well, that's about enough of generating huge numbers of systems and skimming through the results. It took my quaint little computer about half an hour of actual running time to generate those 12,000 systems, which is pretty shocking, and shows how inefficient my approach is. But still, it does work.

Now let's take a look at designing a planet and inserting it into a system. I'm going to try to see how close to its star I can get a habitable planet.

Close to the star means hot, which means that the light molecules in the atmosphere will tend to escape. I'm going to want to make the escape velocity as high as I can to keep the atmosphere where it ought to be. I think this means that I actually want a standard planet, not a large one. Let's see.

I try a standard garden world with a breathable atmosphere. I give it a thin atmosphere in the hopes that that will keep it cool in close to the star. I choose 90% hydrographics to keep the Habitability as high as possible in the face of high temperatures. The control panel tells me that the temperature range ought to be 250 to 340 Kelvins: I put in 340 to keep as close to the star as possible. That's 67 C average surface temperature. I must say that I marvel that that is considered habitable at all: even the polar regions must be nearly 40 C. Never mind.

I'm offered a range of densities from 0.8 to 1.2, I try 0.8. The machine offers me a range of gravities from 0.65 to 1.39. I try 0.65. The machine (which is assuming an F2 V star for the moment) tells me that the orbital radius will be 1.30 AU. I try 1.39 gravities: no change.

I backtrack and see whether high density will help (it ought to raise the escape velocity at given mass, not that I have given mass). Density 1.2. Now I'm allowed gravity 0.53 to 1.13. It shouldn't matter, but I try both extremes.It doesn't matter, and I'm still at 1.30 AU.

Okay, time to backtrack even further: will a dense atmosphere actually help?

Put in 1.8 for the primordial atmospheric mass. Options for density don't change. I try the minimum and maximum gravities. Orbital radius works out 1.97 at each extreme. So a dense atmosphere does not confound expectations. Back to minimum atmospheric mass. It looks as though the closest I can get this standard world to its (F2) star is 1.3 AU.

I try very quickly with a large garden planet. It turns out not to make a difference. So I assign an orbital eccentricity (0), and axial tilt (11°), a primordial day length of 16 hours, and (on a whim) choose to have no major moons and two moonlets. I pick a RVM of 2 to make up for the fact that this place is only marginally habitable, and assign both volcanism and tectonics moderate.

Putting in TL10 and population equal to carrying capacity I get a planet sheet like this:

Code:
System number:    12
Planet:           III


Planetology

class of star:    F2 V
mean distance:    1.30    AU
  perihelion:     1.30    AU
  aphelion:       1.30    AU
axial tilt:       11°
annual period:    1.215   years
                  662.6   local days
local day:        16 h. 4'

                       
large garden planet

diameter:         0.95    x Earth's
                  12,118  km
density:          1.2     x Earth's
                  6.6     g/cm^3
surface gravity:  1.14    g.
                  11.2    m/s^2
escape velocity:  11.7    km/s
vulcanism :       moderate
tectonics :       moderate
climate:          very hot
temperature       
  average:        67      C
  periphelion:    67      C
  aphelion:       67      C
illumination:     339%    x Earth's
oceans:           90%
  composition:    water
  tidal range:    0.25    m
atmosphere        
  main gases:     N2, H2O
  traces &c.:     
  class:          breathable
  pressure:       1.7     bar  (very dense)

Sun & moons                                 apparent ...        tide induced
                  class                     size    period
       sun:       F2 V                      0.64°   16.1 hr         0.25  m

Population & economy

habitability:      4
RVM:               2    resources: very abundant
affinity:          6
settlement type:  
carrying cap.:    1.1 E+9
population:       1.1 E+9     PR:  9
tech level:       10
average income:   G$ 60,300
typical wealth:   average
economic volume:  G$ 65.3 e+12
__________________

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