11-13-2017, 08:51 AM | #241 |
Night Watchman
Join Date: Oct 2010
Location: Cambridge, UK
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Re: Lucy's Choice: Let's make Lucifer Parallels!
The people who run the current asteroid-finding projects are serious astronomers who are actually interested in the stuff they find. They wouldn't miss that. Now, if you want to make it a Hollywood-style project, feel free, but it will have been a lot more expensive that way.
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11-13-2017, 09:27 AM | #242 | |
Untitled
Join Date: Oct 2007
Location: between keyboard and chair
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Re: Lucy's Choice: Let's make Lucifer Parallels!
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I think you're confusing linear distance with angular difference from the ecliptic. I see no reason why an orbit's aphelion or perihelion has to be on the ecliptic (in fact, I can think of reasons why they wouldn't be, unless they're both on the ecliptic), or that the points of an orbit's intersection with the ecliptic cannot be at 1 AU.
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Rob Kelk “Every man has a right to his own opinion, but no man has a right to be wrong in his facts.” – Bernard Baruch, Deming (New Mexico) Headlight, 6 January 1950 No longer reading these forums regularly. |
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11-13-2017, 01:38 PM | #243 |
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Join Date: Oct 2004
Location: Forest Grove, Beaverton, Oregon
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Re: Lucy's Choice: Let's make Lucifer Parallels!
The impact only has to intersect Earth's orbit once. If some unknown Kuiper belt object perturbed it just enough to change its path, that's good enough for a Lucifer world to suffer.
Maybe that reality really does have a giant planet X like ours may or may not have.
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11-13-2017, 02:07 PM | #244 | |
Join Date: Feb 2011
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Re: Lucy's Choice: Let's make Lucifer Parallels!
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11-13-2017, 02:42 PM | #245 | |
Join Date: Dec 2015
Location: New York, NY
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Re: Lucy's Choice: Let's make Lucifer Parallels!
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If a near-moon size body passed earth by close enough to be within the moon's orbit, would that effect tides significantly? And would its velocity matter - if it was faster, would that have more or less of an effect? This is getting more & more outlandish/unlikely. An arriving body of that size that near-misses Earth, with collision later, sounds a lot like it was designed that way (and it is, in world-building terms) - which would raise the idea of it either being from aliens, or even being an alien planet/moon/starship. |
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11-13-2017, 04:00 PM | #246 |
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Join Date: Oct 2004
Location: Forest Grove, Beaverton, Oregon
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Re: Lucy's Choice: Let's make Lucifer Parallels!
The moon is around 30 Earth diameters away. Thinking it's going to hit one "BB", but it actually hits the other one "close" by seems like a very unlikely mistake to make.
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Beware, poor communication skills. No offense intended. If offended, it just means that I failed my writing skill check. |
11-13-2017, 06:51 PM | #247 |
Join Date: Feb 2011
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Re: Lucy's Choice: Let's make Lucifer Parallels!
I think you might want to re-roll that reading comprehension check.
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11-13-2017, 07:09 PM | #248 |
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Join Date: Oct 2004
Location: Forest Grove, Beaverton, Oregon
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Re: Lucy's Choice: Let's make Lucifer Parallels!
I was agreeing, not arguing with the person I quoted.
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Beware, poor communication skills. No offense intended. If offended, it just means that I failed my writing skill check. |
11-14-2017, 08:35 AM | #249 |
Join Date: Aug 2008
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Re: Lucy's Choice: Let's make Lucifer Parallels!
Calculating the effects of a near Lunar miss on a passing space rock years out still strikes me as tricky. That there would or would not be an effect, yes, but not being able to plot the exact effect until it gets closer sounds more realistic.
Having a near Lunar miss happen and then realizing the new course of the object impacts Earth some years in the future is quite doable. I still wonder about that dinosaur killer rock hitting the moon. What are the best/ worst cases? I doubt Luna's orbit would shift enough to be worrisome, but how bad would the shrapnel be to Earth? |
11-14-2017, 08:40 AM | #250 | |
Untitled
Join Date: Oct 2007
Location: between keyboard and chair
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Re: Lucy's Choice: Let's make Lucifer Parallels!
Quote:
So probably just a meteor shower.
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Rob Kelk “Every man has a right to his own opinion, but no man has a right to be wrong in his facts.” – Bernard Baruch, Deming (New Mexico) Headlight, 6 January 1950 No longer reading these forums regularly. |
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