Celestia Forums

Positional data has been fixed, thanks primarily to the Hippacros database. The new position puts 36 Ophiuchi B at approximately 53 AU from 36 Ophiuchi A, which although not entirely accurate, is believable given its calculated orbit. For those that may wish to use the star themselves, here is the f...

Let us pause for a moment and curse Bill Gates' name... It was being saved as .stc.txt rather than .stc. Fixed and the star is appearing now, though not quite where it's supposed to be, though I believe that is because of a discrepancy in the positional data provided by the Internet Stellar Database...

No such luck, I'm afraid. It's not working. Even tried entering the name and imaginary HIP number in starnames.dat. Zilch. For your information, I'm using Celestia version 1.3.2. I've gone over the format several times and I am at a total loss why this isn't working. Any suggestions? Andrew

Hi all, I noticed that the star 36 Ophiuchi was lacking a companion. 36 Ophiuchi is a trinary star system, and while A and C are in Celestia, B was not. Rather than use a "luminous object" in an SSC file, I decided to set up an STC file, using the examples in the Gamma Leporis B thread and selden's ...

We don't have a whole lot of options for a ring to form around a moon naturally. The only way for a ring to form - especially in the timescale proposed - would be if something (an asteroid or comet) got pulled into orbit around the moon and dipped below the moon's Roche Limit, tearing it apart. Let ...

The movie got many things wrong, but the possibility of global warming causing an ice age is very much a real one. When the last ice age drew to a close some eleven thousand years ago, the melting glaciers in North America created a large freshwater lake in Central Canada (Lake Aggiziz [sic?] ) This...

Oh, I'm not worried about the equation, grant... but that small a spindown time tells me that much of the geological, climate, and biological history I devised for this world will need to be torn down and rebuilt from scratch. Initial assumption was that the planet would have a large (somewhere betw...

Hmmm... Using your equation, I plugged in values for Struve 2398 A and the hypothetical planet: Planet Mass: 1.059 Earths Planet Radius: 1.11 Earths Star Mass: 0.2151 Sols Semimajor Axis: 0.0545 AU Starting Rotation Rate: 5 hours Time until the planet becomes tidally locked = 12,900 years. Eep!

Is there a way to figure out roughly how long it would take a planet in an otherwise "habitable" orbit around a red dwarf star to brake enough that 1 side of the planet is always facing the sun? And (given the same primary) how long it would take for a double planet or earth-moon type system to degr...

Okay, update on my texture: I settled on a cyan colour, taking a 4k Earth Map and adjusting its colour balance in favour of cyan to get the desired effect, and using a second 4K Earth map (uncoloured) for other parts. As this is my first texture, it's taking me a lot longer than I expected to assemb...

I stand corrected. So much for my lapsed physics studies Hope I didn't give offense, grant.

Thanks, Selden. I had a suspicion I would have to do something like that, though I was hoping for an... easier solution (okay, I'm lazy :p ) Guest and grant; as far as plant colour was concerned, I was thinking either yellow or cyan, and while the examples you'd provided are certainly plausible, my ...

Hi everyone, I've been playing with Celestia for almost a year, and have recently started working on some new fictional yet plausible worlds of my own. My current project is a habitable planet orbiting a red dwarf sun, but I've run into a snag. While designing the planet texture, I got to thinking a...