Asteroids: Data Files:
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| Summary: | XM1 was a close-call asteroid. |
| Description: | This add-on displays the close-call asteroid 1994 XM1. To install, simply copy the XYZ file to your Celestia\data directory, and then copy the SSC file to your Celestia\extras directory AFTER modifying the following in the SSC file. If you don't do this, you won't see the asteroid in Celestia. Simply replace the .3DS file extension within the file so that it reads as a .CMS file. This is necessary unless you DO have an asteroid.3ds file in your Celestia\models folder. Also, this add-on only displays the asteroid between the dates of August 26, 1989 and June 11, 2000. |
| Addon Homepage: | http://homepage.eircom.net/~jackcelestia/ |
| Creator: | Jack Higgins |
| Version: | unknown |
| License: | unknown |
| Added: | 2004-11-04 20:24 |
| Last modified: | 2011-11-11 15:39 |
| Download: | |
| 1994 XM1 SSC/XYZ | 132.57 kB |
Comments by visitors:
2016-08-29 01:18
#2 anonymous
Michael pastorett - this is because the addon only works for a certain time frame. You have to go back in time using control-T (or command-T).
Here's my modified .ssc file, which fixes it (Only works for 1.6.0 and above):
"1994 XM1" "Sol"
{
Class "asteroid"
Mesh "asteroid.cms"
Texture "asteroid.jpg"
Radius 0.015
Albedo 0.1
RotationPeriod 7 # guess
Timeline
[
# sampled orbit
{
OrbitFrame { EclipticJ2000 { Center "Sol" } }
Ending "2000 06 11 00:20:31.2"
SampledOrbit "1994xm1.xyz"
}
# after sampled orbit
{
OrbitFrame { EclipticJ2000 { Center "Sol" } }
EllipticalOrbit
{
Epoch 2449695.5 # 1994 December 09
SemiMajorAxis 2.0056797917
Period 2.8405379796
Inclination 5.6216925732
Eccentricity 0.5530792830
AscendingNode 77.149095459
ArgOfPericenter 42.001634502
MeanAnomaly 349.08596049
}
}
]
}
Here's my modified .ssc file, which fixes it (Only works for 1.6.0 and above):
"1994 XM1" "Sol"
{
Class "asteroid"
Mesh "asteroid.cms"
Texture "asteroid.jpg"
Radius 0.015
Albedo 0.1
RotationPeriod 7 # guess
Timeline
[
# sampled orbit
{
OrbitFrame { EclipticJ2000 { Center "Sol" } }
Ending "2000 06 11 00:20:31.2"
SampledOrbit "1994xm1.xyz"
}
# after sampled orbit
{
OrbitFrame { EclipticJ2000 { Center "Sol" } }
EllipticalOrbit
{
Epoch 2449695.5 # 1994 December 09
SemiMajorAxis 2.0056797917
Period 2.8405379796
Inclination 5.6216925732
Eccentricity 0.5530792830
AscendingNode 77.149095459
ArgOfPericenter 42.001634502
MeanAnomaly 349.08596049
}
}
]
}
2006-06-19 20:48
#1 Michael pastorett
When I got up close it would not appear no matter what model I had specified!
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