Here's something a bit different. Populating galaxies with stars is something that's been done before, but doing so with data from SIMBAD is something new, I believe.
This add-on adds about 370 stars in the dwarf galaxy Wolf-Lundmark-Melotte (WLM). These stars are real, and the data is from SIMBAD. Specifically, I've extracted names, coordinates, and spectral types (if known) from SIMBAD. For stars whose spectral types are not known, variable types have been used to fill in random spectral types; for example, Carbon stars would be given a spectral type of "C". Because the distance of these stars aren't known, I used special formulae to come up with random (but realistic) distances for each of the stars.
Note that in the default version of Celestia, WLM is rendered as a blob (Type "Irr") and not its more elongated shape. So, for the stars to actually fit in the galaxy, go to your galaxies.dsc and replace the definition of WLM with this:
Code: Select all
Galaxy "WLM:Wolf-Lundmark-Melotte:DDO 221"
Distance 3.001e+06 # method: rgb
# Radius 4208
Axis [ -0.2128 -0.8243 -0.5246]
InfoURL "http://simbad.u-strasbg.fr/sim-id.pl?Ident=NAME WLM Galaxy"