10-30-2010, 11:03 AM | #21 |
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Re: [Space] GURPS Handbook of the Planets
I rarely if ever use this expression, but Oh.. My.. God!
You are one awesome man, Brett. If we wanted kids, I would ask you to impregnate my girlfriend. |
10-30-2010, 11:15 AM | #22 |
Join Date: May 2005
Location: Oz
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Re: [Space] GURPS Handbook of the Planets
Now to see how many habitable worlds we can get in the outer reaches of a system with this object at the inner edge of the Goldilocks Zone. I figure that we want a solitary star with a conventional arrangement of gas giants, to have the most planets and smallest eccentricities. Also, we want the system old (so that planets will have the best chance to make the Ocean->Garden transformation. And that means a low-mass, dimmish star so that it will have a long lifespan. But a star older than the Galaxy would be silly. I reckon on 10 billion years as enough. A quick experiment shows me that a mass 1.05 star will have become a subgiant at that age, but mass 1 is still okay. My designed planet will tide-lock, but that won't (officially speaking) alter its Habitability.
System sheet looks like this: Code:
system number: 12 class of star: G2 V mass: 1 M_ luminosity: 1.60 L_ age: 10 Gya. diameter: 0.0117 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 0.22 small rock planet 0.84 0.41 0.59 none 374 infernal infinite 0 0 0 II 0.37 tiny rock planet 0.36 0.04 0.28 none 228 infernal infinite 0 -1 -1 III 0.72 large garden planet 0.95 1.0 1.1 very dense breathable 90% water 67 very hot infinite 4 2 6 2 moonlets 84 infernal 0 0 0 IV 1.1 small rock planet 0.58 0.13 0.40 none 19 normal 40.2 0 0 0 1 moonlet 22 normal 0 -1 -1 1.8 asteroid belt -47 frozen 0 2 2 V 2.9 small rock planet 0.40 0.05 0.32 none -96 frozen 18.2 0 0 0 VI 8.3 medium gas giant 8.2 100 1.5 superdense corrosive 48.9 6 moonlets -168 frozen 0 0 0 VIa 31 tiny ice moon 0.30 0.01 0.12 none -180 frozen 48.9 0 0 0 VIb 57 tiny ice moon 0.13 0.00 0.08 none -180 frozen 118 0 -1 -1 5 moonlets -168 frozen 0 0 0 VII 13 small gas giant 6.7 50 1.1 superdense corrosive 169 12 moonlets -190 frozen 0 0 0 VIIa 51 tiny ice moon 0.21 0.00 0.08 none -199 frozen 142 0 -1 -1 VIIb 57 standard ice moon 0.49 0.10 0.39 very thin suffocating -183 frozen 169 0 0 0 VIIc 66 small ice moon 0.35 0.02 0.17 very dense mildly toxic 30% h'carb. -186 frozen 211 -1 0 -1 VIId 76 standard ice moon 0.28 0.02 0.28 very thin suffocating -182 frozen 258 0 0 0 VIIe 88 tiny ice moon 0.26 0.01 0.11 none -199 frozen 322 0 0 0 2 moonlets -190 frozen 0 0 0 VIII 24 medium gas giant 8.2 100 1.5 superdense corrosive 259 9 moonlets -211 frozen 0 0 0 VIIIa 73 tiny sulfur moon 0.08 0.00 0.03 none -224 frozen 174 -2 0 -2 VIIIb 96 standard hadean moon 0.73 0.16 0.29 none -230 frozen 259 0 0 0 VIIIc 121 tiny ice moon 0.18 0.00 0.07 none -218 frozen 369 0 -1 -1 6 moonlets -211 frozen 0 0 0 IX 38 small gas giant 4.5 20 0.99 superdense corrosive 73.2 6 moonlets -224 frozen 0 0 0 IXa 24 tiny ice moon 0.18 0.00 0.07 none -230 frozen 73.2 0 0 0
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Decay is inherent in all composite things. Nod head. Get treat. Last edited by Agemegos; 10-30-2010 at 11:26 AM. |
10-30-2010, 11:23 AM | #23 |
Join Date: May 2005
Location: Oz
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Re: [Space] GURPS Handbook of the Planets
The system sheet for System 648 under all those custom settings looks like this:
Code:
system number: 648 class of star: G2 V mass: 1 M_ luminosity: 1.60 L_ age: 10 Gya. diameter: 0.0117 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) 0.22 asteroid belt 371 infernal 0 -1 -1 I 0.38 tiny rock planet 0.47 0.06 0.28 none 221 infernal infinite 0 0 0 II 0.72 large garden planet 0.95 1.0 1.1 very dense breathable 90% water 67 very hot infinite 4 2 6 2 moonlets 84 infernal 0 0 0 III 1.0 standard garden planet 0.62 0.22 0.56 thin marginal 70% water 51 hot 32.2 5 -2 3 1 moonlet 27 normal 0 0 0 IV 1.6 standard garden planet 0.69 0.33 0.69 standard marginal 70% water -17 cold 12.6 7 -1 6 2 moonlets -36 frozen 0 0 0 2.8 asteroid belt -91 frozen 0 0 0 V 8.0 large gas giant 14 2500 14 superdense corrosive 23.9 6 moonlets -166 frozen 0 0 0 Va 87 small ice moon 0.37 0.02 0.18 very dense mildly toxic 50% h'carb. -155 frozen 44.6 -1 0 -1 Vb 103 tiny ice moon 0.30 0.01 0.15 none -178 frozen 58.2 0 0 0 Vc 126 small ice moon 0.45 0.04 0.18 very dense mildly toxic 50% h'carb. -156 frozen 78.0 -1 1 0 Vd 150 tiny ice moon 0.18 0.00 0.09 none -178 frozen 102 0 0 0 5 moonlets -166 frozen 0 -1 -1 VI 14 medium gas giant 11 300 2.6 superdense corrosive 64.3 11 moonlets -193 frozen 0 0 0 VIa 41 tiny ice moon 0.17 0.00 0.07 none -202 frozen 42.3 0 0 0 VIb 47 tiny ice moon 0.27 0.01 0.08 none -202 frozen 51.6 0 0 0 VIc 55 standard ice moon 0.56 0.18 0.56 thin mildly toxic -182 frozen 64.3 -1 0 -1 VId 62 tiny ice moon 0.27 0.01 0.08 none -202 frozen 78.5 0 0 0 VIe 71 tiny ice moon 0.23 0.01 0.12 none -202 frozen 95.8 0 -1 -1 2 moonlets -193 frozen 0 0 0 VII 23 medium gas giant 12 450 3.2 superdense corrosive 40.1 9 moonlets -210 frozen 0 0 0 VIIa 118 tiny sulfur moon 0.21 0.00 0.10 none -223 frozen 167 -2 1 -1 6 moonlets -210 frozen 0 0 0 VIII 39 medium gas giant 10 200 2.0 superdense corrosive 17.0 4 moonlets -224 frozen 0 0 0 VIIIa 89 small hadean moon 0.26 0.01 0.13 none -239 frozen 165 0 -2 -2 VIIIb 116 tiny sulfur moon 0.14 0.00 0.07 none -234 frozen 246 -2 1 -1 VIIIc 152 small hadean moon 0.30 0.01 0.12 none -239 frozen 366 0 -1 -1
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Decay is inherent in all composite things. Nod head. Get treat. |
10-30-2010, 11:24 AM | #24 |
Join Date: May 2005
Location: Oz
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Re: [Space] GURPS Handbook of the Planets
And its planets like this:
Code:
System number: 648 Planet: II Planetology class of star: G2 V mean distance: 0.72 AU perihelion: 0.72 AU aphelion: 0.72 AU axial tilt: 11° annual period: 0.610 years tidelocked local day: infinite 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 dayside: 84 C nightside: 50 C illumination: 309% x Earth's oceans: 90% composition: water tidal range: 0.00 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: G2 V 0.93° infinite hr 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 Code:
System number: 648 Planet: III Planetology class of star: G2 V mean distance: 1.02 AU perihelion: 0.92 AU aphelion: 1.13 AU axial tilt: 20° annual period: 1.036 years 282.1 local days local day: 32 h. 12' standard garden planet diameter: 0.62 x Earth's 7,918 km density: 0.9 x Earth's 5.0 g/cm^3 surface gravity: 0.56 g. 5.5 m/s^2 escape velocity: 6.6 km/s vulcanism : none tectonics : none climate: hot temperature average: 51 C periphelion: 68 C aphelion: 37 C illumination: 153% x Earth's oceans: 70% composition: water tidal range: 0.30 m atmosphere main gases: N2, O2 traces &c.: low O2 class: marginal pressure: 0.67 bar (thin) Sun & moons apparent ... tide induced class size period sun: G2 V 0.65° 32.2 hr 0.30 m Population & economy habitability: 5 RVM: -2 resources: very poor affinity: 3 settlement type: carrying cap.: 61.6 E+6 population: 61.6 E+6 PR: 7 tech level: 10 average income: G$ 53,600 typical wealth: average economic volume: G$ 3.3 e+12 Code:
System number: 648 Planet: IV Planetology class of star: G2 V mean distance: 1.64 AU perihelion: 1.64 AU aphelion: 1.64 AU axial tilt: 27° annual period: 2.097 years 1456.2 local days local day: 12 h. 38' standard garden planet diameter: 0.69 x Earth's 8,772 km density: 1.0 x Earth's 5.5 g/cm^3 surface gravity: 0.69 g. 6.7 m/s^2 escape velocity: 7.7 km/s vulcanism : none tectonics : none climate: cold temperature average: -17 C periphelion: -17 C aphelion: -17 C illumination: 60% x Earth's oceans: 70% composition: water tidal range: 0.07 m atmosphere main gases: N2, O2 traces &c.: high O2 class: marginal pressure: 0.83 bar (standard) Sun & moons apparent ... tide induced class size period sun: G2 V 0.41° 12.6 hr 0.07 m Population & economy habitability: 7 RVM: -1 resources: poor affinity: 6 settlement type: carrying cap.: 567.5 E+6 population: 567.5 E+6 PR: 8 tech level: 10 average income: G$ 60,300 typical wealth: average economic volume: G$ 34.2 e+12
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10-30-2010, 01:02 PM | #25 |
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Re: [Space] GURPS Handbook of the Planets
Could someone fiddle with this to come up with a system I want? Other than Brett, you've done enough incredible wonderful work.
I want a two garden world system, in which one is a large cool to warm planet, and one is a warm to hot relatively low gravity one. I can't seem to to reproduce Brett's results by just putting in the system and universe numbers. I know, I'm an Open Office moron. |
10-30-2010, 02:57 PM | #26 | |||
Join Date: May 2005
Location: Oz
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Re: [Space] GURPS Handbook of the Planets
Quote:
Quote:
Just to be clear: when you say "large" do you mean "having a diameter similar to Earth or larger" or "having significant helium in the atmosphere"? Quote:
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10-30-2010, 03:00 PM | #27 | |
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Re: [Space] GURPS Handbook of the Planets
Quote:
The stars seem to match, but most of them have only ocean worlds if that. |
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10-30-2010, 04:38 PM | #28 | |
Join Date: May 2005
Location: Oz
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Re: [Space] GURPS Handbook of the Planets
Quote:
Try this.
Does the resulting system suit your requirements? You ought to get a system table matching this: Code:
system number: 754 class of star: F9 V mass: 1.15 M_ luminosity: 2.29 L_ age: 5 Gya. diameter: 0.0126 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 0.15 standard chthonian planet 1.4 2.3 1.2 none 575 infernal infinite 0 0 0 II 0.30 tiny rock planet 0.61 0.18 0.49 none 329 infernal 2726 0 0 0 III 0.48 small rock planet 0.68 0.26 0.55 none 198 infernal infinite 0 0 0 IV 0.82 small rock planet 0.61 0.18 0.49 none 88 infernal 36.7 0 0 0 V 1.3 standard garden planet 0.52 0.14 0.52 thin marginal 80% water 43 tropical 17.2 6 0 6 VI 1.8 standard garden planet 1.4 2.2 1.1 very dense breathable 80% water 7 cool 28.3 6 0 6 1 moonlet -24 very cold 0 0 0 VII 4.0 small rock planet 0.41 0.05 0.29 none -110 frozen 21.2 0 -1 -1 VIIa 15 tiny rock moon 0.07 0.00 0.04 none -108 frozen 768 0 -1 -1 VIII 8.1 medium gas giant 8.2 100 1.5 superdense corrosive 16.3 9 moonlets -156 frozen 0 0 0 VIIIa 73 tiny ice moon 0.31 0.01 0.16 none -170 frozen 174 0 0 0 VIIIb 96 tiny ice moon 0.21 0.00 0.08 none -170 frozen 260 0 0 0 VIIIc 132 small ice moon 0.46 0.05 0.23 very dense mildly toxic 80% h'carb. -148 frozen 420 -1 1 0 5 moonlets -156 frozen 0 0 0 IX 14 small gas giant 3.9 15 1.0 superdense corrosive 169 6 moonlets -184 frozen 0 -1 -1 IXa 38 standard ice moon 0.70 0.27 0.56 very thin suffocating -179 frozen 169 0 2 2 1 moonlet -184 frozen 0 0 0 X 23 small gas giant 7.1 60 1.2 superdense corrosive 50.3 4 moonlets -204 frozen 0 0 0 Xa 27 tiny ice moon 0.29 0.01 0.14 none -212 frozen 50.3 0 0 0 Xb 32 tiny ice moon 0.24 0.01 0.10 none -212 frozen 63.6 0 -1 -1 Xc 38 tiny ice moon 0.16 0.00 0.06 none -212 frozen 82.9 0 0 0 Xd 45 small hadean moon 0.37 0.02 0.15 none -226 frozen 108 0 -1 -1 3 moonlets -204 frozen 0 -1 -1 XI 40 small gas giant 2.9 10 1.2 superdense corrosive 49.1 7 moonlets -220 frozen 0 0 0 XIa 15 standard hadean moon 0.53 0.08 0.27 none -237 frozen 49.1 0 0 0 XIb 18 small hadean moon 0.27 0.01 0.16 none -237 frozen 66.0 0 0 0 XIc 21 small hadean moon 0.26 0.01 0.13 none -237 frozen 83.5 0 0 0 XId 25 tiny sulfur moon 0.09 0.00 0.04 none -231 frozen 109 -2 1 -1
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Decay is inherent in all composite things. Nod head. Get treat. Last edited by Agemegos; 10-30-2010 at 05:04 PM. |
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10-30-2010, 04:47 PM | #29 |
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Re: [Space] GURPS Handbook of the Planets
Perfect. It must be a difference in the random numbers.
Thanks. |
10-30-2010, 04:51 PM | #30 |
Join Date: May 2005
Location: Oz
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Re: [Space] GURPS Handbook of the Planets
No, if it's working now then it was probably the change of version or else you had modified some cell (e.g. on the control panel) and not put it back. That's easy enough to do, and it is the reason why it is important to keep an unmodified original download in a safe place and never alter it.
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Decay is inherent in all composite things. Nod head. Get treat. Last edited by Agemegos; 10-30-2010 at 05:14 PM. |
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