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Forum » SpaceEngine » Space Journeys » Challenge: Gas moon of a gas planet (without a barycenter)
Challenge: Gas moon of a gas planet (without a barycenter)
NovaSiliskoDate: Friday, 04.01.2013, 07:33 | Message # 1
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I've found many binary gas giants in SE, but only once have I found a proper gas moon - that is, low enough mass that it does not orbit a barycenter, but the parent planet itself. If I remember right, the parent had 3 jupiter mass, and the moon had 12 earth mass.

Sadly, I hadn't realized it was such a rare thing at the time and did not take any pictures or location snapshots or anything.

I've been looking for a recurrence of this for a long time, but, so far, to no avail. So, I present you with a challenge: help find the elusive gas moon again. smile

Edit: To clarify, I mean a gas moon orbiting the planet directly, not both orbiting a barycenter (be it like pluto-charon or earth-moon)


Edited by NovaSilisko - Friday, 04.01.2013, 13:43
 
SalvoDate: Friday, 04.01.2013, 10:15 | Message # 2
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A lot of time i use SE but I never founded one D:




The universe is not required to be in perfect harmony with human ambition.

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TimDate: Friday, 04.01.2013, 12:21 | Message # 3
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But, doesn't a moon always orbit a barrycenter? If it isn't generated in SE, it's because the barrycenter "planet-moon" is near the barrycenter of the planet. Or is that completely wrong?
 
NovaSiliskoDate: Monday, 07.01.2013, 12:16 | Message # 4
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Well, if the mass ratio is lopsided enough, SE won't even use a barycenter - it will just orbit the planet itself.

Added (07.01.2013, 15:16)
---------------------------------------------
I have found what I was looking for!



This is a very weird planet... the main object is 8 jupiter masses, but the outer one is only 0.06, despite their similar sizes. Here is the place code:

Place    "Gas moon"
{
  Body    "RS 0-3-228-861-18153-0-0-1 1.4"
  Parent    ""
  Pos  (-3.734400599408709e-009, -4.291235418857385e-008, 5.977520162512131e-008)
  Rot  (-0.5027922761763489, -0.3758807579453418, -0.3247104440110367, 0.7074437860169506)
  Date    "2016.02.22 04:41:00.03"
  Vel  5.6916885e-008
  Mode    1
}
 
anonymousgamerDate: Wednesday, 09.01.2013, 03:27 | Message # 5
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Close enough.... the barycenter is inside the planet.


Attachments: 0366892.jpg(215Kb)





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HarbingerDawnDate: Wednesday, 09.01.2013, 04:43 | Message # 6
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(anonymousgamer)
the barycenter is inside the planet.
(NovaSilisko)
To clarify, I mean a gas moon orbiting the planet directly, not both orbiting a barycenter (be it like pluto-charon or earth-moon)

Clearly, it is not close enough.





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NovaSiliskoDate: Thursday, 10.01.2013, 00:33 | Message # 7
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Yeah, binary gas giants are fairly common. I'd say 1 in 12 or so are binaries. Only ever found two proper gas moons, however, out of a probable several thousand gas giants I've seen.
 
SpaceEngineerDate: Thursday, 10.01.2013, 12:33 | Message # 8
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In my development version I found a true ice giant moon, orbiting a gas giant together with some selenas and one terra with life. But this system was destroyed soon by changes in the generation algorithms sad




 
apenpaapDate: Thursday, 10.01.2013, 19:12 | Message # 9
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Oh wow, I would've thought the generation algorithms would select only from terrestrial classes for normal moons. I guess the rareness of really heavy gas giants in current SE would make them less likely.




I occasionally stream at http://www.twitch.tv/magistermystax. Sometimes SE, sometimes other games.
 
apenpaapDate: Friday, 11.01.2013, 20:26 | Message # 10
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Found one! No terra with life as its other moons, just two selenas, but it's still very neat. Its name is RS 0-4-2715-47-11229-0-0-0 2.










Attachments: 9917437.jpg(130Kb) · 6453952.jpg(185Kb) · 1224755.jpg(96Kb) · 0698001.jpg(261Kb) · 7183280.jpg(236Kb)





I occasionally stream at http://www.twitch.tv/magistermystax. Sometimes SE, sometimes other games.

Edited by apenpaap - Friday, 11.01.2013, 20:27
 
Forum » SpaceEngine » Space Journeys » Challenge: Gas moon of a gas planet (without a barycenter)
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