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Questions about celestial bodies that orbit another celestial body.
75 questions
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What is the relationship between Io and Jupiter's radiation?
I am a student in an astronomy class in community college and this is my first astronomy class. I am doing a project on the Galilean moons, and have been scrubbing the internet, yet I can't find much ...
- 11
2
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1
answer
354
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Could Phobos or Deimos be a good target for mining?
Phobos could be loaded with iron, magnesium, and other metals of sorts. Because of the mineralogy of the moon, could it become a useful target for future plans similar to asteroid mining?
Phobos and ...
- 75
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6
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3k
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Why is there never enough room on satellites to hold all the equipment needed?
Why can a satellite run infrared and other forms of data collecting equipment and stream live results back for the public, but not take photos or video? I am guessing there is never enough room to ...
1
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0
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73
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Diameters of moons in solar system
I would like to programmatically find all moons in our solar system above a certain diameter. I would like to use the api to jpl horizons if possible. (For context I am then going on to find ...
- 111
3
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2k
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Delta V required to land and then ascend from the surface of every celestial body
I've been doing some research to figure out how feasible grand tour manned missions to the surface of the moons of each outer planet.
This is related:
Where can I find a delta v map of landing ...
- 1,195
6
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733
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How close do gravitational 2-body hierarchy levels get?
Due to very few 3-body arrangements being stable (this question thus excluding co-orbital objects like trojans), objects in space usually arrange themselves in a hierarchy of 2-body systems. When the ...
6
votes
2
answers
476
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Is it possible to create an analytical ephemeris from raw position and velocity of a Body?
I would like to have an analytical ephemeris for various bodies of the solar system (planets, natural satellites and asteroid). I have at my disposition spice kernels from which i can extract position ...
- 71
1
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64
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Arctic underwater analogue?
Just want to know if the underneath of the arctic ice sheet is a viable analogue for underwater habitation on the larger moons of the gas giants? (Galilean, large Saturnian)
I feel like it would be a ...
- 1,195
2
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1
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479
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Can we land on either of Mars' moons?
Is it possible for anything to land safely of Deimos or Phobos? If so, are there any current or past proposals? If not, why? The only missions to Mars' moons I know of are Phobos 1 and Phobos 2 (both ...
user49758
-2
votes
1
answer
226
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Which of Jupiter’s Galilean moons would be easiest to establish a permanent presence on? [closed]
The moons of Jupiter are numerous and varied. Which of them would be easiest to colonise in terms of technological complexity?
- 386
3
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83
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Melting probes in low pressure environment
The icy moons in our solar system Enceladus und Europa are very interesting targets for research because they sport deep oceans of liquid water under their thick shells of ice. But above that icy ...
- 4,186
4
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156
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Efficiency of "liquid cooled" RTG
One of the big problems in the vacuum of space is getting heat away. RTG that rely on a temperature differential from the hot to the "cold" side to produce electricity will probably suffer a ...
- 4,186
4
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0
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134
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Just how locked is Titan? Does it exhibit libration due to eccentricity? Have residual oscillations not yet damped out been detected or ruled out?
Under Where is the Selk crater on Titan with respect to Saturn? there is @BrendanLuke15's comment which provides a helpful hint:
Tidally locked moons have their 0° longitude defined as the 'sub-...
- 154k
7
votes
1
answer
844
views
Smallest known asteroid with moon
The asteroid Didymos is only 780m in "diameter" with a moon, Dimorphos only 170m across. Is Didymos the smallest object known to have a natural satellite? Also, contact binaries where the ...
- 799
10
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1
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324
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Which moon is best? (for gravity assists)
Inspired by my answer to Is a ballistic Jovian capture using the Galilean moons possible from interplanetary entry? in which I discovered that Callisto offers a stronger gravity assist than Ganymede ...
- 11k