Celestia Forums

I've been following up on some leads and have found this: All-sky Compiled Catalogue of 2.5 million stars (Kharchenko, 2001) VizieR On-line Data Catalog I/280A This catalogue lists parallax and spectral types, where known. For those that are interested go to: http://cdsweb.u-strasbg.fr/viz-bin/Cat?I...

Thanks for your help.

I'll be sure to check out these two links you've both provided.

Thanks Selden, That's definitely helped put me more in the clear, and onto the right track. However, my bind is that some catalogues omit parallax and/or spectral type. I was going to visit Pascal Hartmann's webpage to see if he could help me, as he was the one who compiled the 2 million star databa...

I know there is a possibility that this question has been covered before so, if it has, could someone please direct me to the relevant posting(s), thank you. I am interested in how Celestia calculates approximate values for the following items when no direct data exists in the star catalogue used (i...