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Challenge: Gas moon of a gas planet (without a barycenter)
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| NovaSilisko | Date: Friday, 04.01.2013, 07:33 | Message # 1 |
 Explorer
Group: SE team
United States
Messages: 288
Status: Offline
| 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. 
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 |
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| Salvo | Date: Friday, 04.01.2013, 10:15 | Message # 2 |
 Star Engineer
Group: Local Moderators
Italy
Messages: 1400
Status: Offline
| 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.
CPU: Intel Core i7 4770 GPU: ASUS Radeon R9 270 RAM: 8 GBs
(still don't know why everyone is doing this...)
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| Tim | Date: Friday, 04.01.2013, 12:21 | Message # 3 |
 Explorer
Group: Users
Belgium
Messages: 296
Status: Offline
| 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?
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| NovaSilisko | Date: Monday, 07.01.2013, 12:16 | Message # 4 |
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Explorer
Group: SE team
United States
Messages: 288
Status: Offline
| 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
}
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| anonymousgamer | Date: Wednesday, 09.01.2013, 03:27 | Message # 5 |
 World Builder
Group: Global Moderators
United States
Messages: 1011
Status: Offline
| Close enough.... the barycenter is inside the planet.
Desktop: FX-8350 4.0 GHz, 8 GB DDR3 RAM, EVGA GeForce GTX 1080 FTW 8 GB, 2 TB HDD, 24 inch 1920x1080 screen
Laptop: Core i5 480M 2.66 GHz (turbo 2.93), 8 GB DDR3 RAM, AMD Radeon HD 6550m 1 GB, 640 GB HDD, 17.3 inch 1600x900 screen
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| HarbingerDawn | Date: Wednesday, 09.01.2013, 04:43 | Message # 6 |
 Cosmic Curator
Group: Administrators
United States
Messages: 8717
Status: Offline
| (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.
All forum users, please read this!
My SE mods and addons
Phenom II X6 1090T 3.2 GHz, 16 GB DDR3 RAM, GTX 970 3584 MB VRAM
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| NovaSilisko | Date: Thursday, 10.01.2013, 00:33 | Message # 7 |
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Explorer
Group: SE team
United States
Messages: 288
Status: Offline
| 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.
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| SpaceEngineer | Date: Thursday, 10.01.2013, 12:33 | Message # 8 |
 Author of Space Engine
Group: Administrators
Russian Federation
Messages: 4800
Status: Offline
| 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 
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| apenpaap | Date: Thursday, 10.01.2013, 19:12 | Message # 9 |
 World Builder
Group: Users
Antarctica
Messages: 1063
Status: Offline
| 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.
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| apenpaap | Date: Friday, 11.01.2013, 20:26 | Message # 10 |
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World Builder
Group: Users
Antarctica
Messages: 1063
Status: Offline
| 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.
I occasionally stream at http://www.twitch.tv/magistermystax. Sometimes SE, sometimes other games.
Edited by apenpaap - Friday, 11.01.2013, 20:27 |
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