Celestia Forums

CDS appear to have updated the datafiles for the new revision of the Hipparcos catalogue (I/311) - not sure why, but one thing I have noticed is that it has fixed the solar neighbourhood within 10 light years of Sol. A new version of stars.dat and stars.txt are available from the Subversion repository.

ajtribick wrote:CDS appear to have updated the datafiles for the new revision of the Hipparcos catalogue (I/311) - not sure why, but one thing I have noticed is that it has fixed the solar neighbourhood within 10 light years of Sol. A new version of stars.dat and stars.txt are available from the Subversion repository.

Just out of curiosity, what do you mean by "fixed"?

--Chris

There were various stars in that region that perhaps shouldn't be.

Most sources say there are only the following stars within 10 ly of Sol

Sol
Proxima Centauri
Alpha Centauri A+B
Barnard's Star
Wolf 359
Lalande 21185
Sirius A+B
Luyten 726-8 A+B (BL+UV Ceti)
Ross 154

What HIP 14559 (to take one example) was doing at a distance of 6-and-a-bit light years, I don't know...

Also it now looks like we've got a few more stars...

Revision 2800: 112519 stars (the last revision before I started working on the star databases)
Revision 4409: 109916 stars (based on the previous version of I/311)
Revision 4462: 113179 stars (this version)

ajtribick wrote:Also it now looks like we've got a few more stars...

Revision 2800: 112519 stars (the last revision before I started working on the star databases)
Revision 4409: 109916 stars (based on the previous version of I/311)
Revision 4462: 113179 stars (this version)

ah bon !