VOYAGER 1 AND 2 NOT SET CORRECTLY

alegator · Post #1by **alegator** » 14.01.2003, 05:43

I set time to September 7, 1977 (2 days after Voyager 1 launch) and Celestia will show Voyager 1 hundreds of millions of km away from Earth. Is this a bug?
Thanks.

Kendrix · Post #2by **Kendrix** » 14.01.2003, 11:46

Normal !!

The Launch date is the 5 September not the 7 ! If you set this date you will be only at 55000 km from earth. (don't forget that our good old planet move around the Sun at 30 km/s !)

Celestia is awesome !

Kendrix · Post #3by **Kendrix** » 14.01.2003, 15:12

Oups I didn't read your post correctly.

For me the 7 september Voyager 1 is only at 1,600,000 km from earth.

Everything is correct for me...

perhaps your .xyz files for Voyager are wrong...

Guest · Post #4by **Guest** » 14.01.2003, 21:01

In addition to the xyz files, don't they require a script in the solarsys.ssc file? I don't see any reference to "voyager" in the solarsys.ssc file.
Thanks.

Post #5by **selden** » 14.01.2003, 21:18

Yes, there needs to be an ssc file, but Celestia uses all the .ssc files that it finds in the "extras" directory. You don't have to edit solarsys.ssc to add objects.

For a spacecraft that uses an xyz trajectory definition, its ssc file can be quite simple. For example, you can create voyager.ssc which just contains

Code: Select all

"Voyager" "Sol"
{
Class "spacecraft"
Mesh "voyager.3ds"
Radius 0.00085
Albedo 0.7
SampledOrbit "voyager.xyz"
}

Of course, this assumes you also have a voyager 3ds model.
I usually use "galileo.3ds" since I know the Galileo model is shipped with Celestia and I'm usually more interested in watching the things that it flies by.