Celestia Forums

The Hipparcos data has been rereduced to produce a more accurate catalogue.

Printed version released today, online data to come in early 2008

Now available at http://cdsarc.u-strasbg.fr/viz-bin/Cat?I/311

yes !

The file is too big, maximum allowed size is 256 KiB. <= LOL

HIP2.DAT
http://images.imagehotel.net/?9o0y743l10.jpg

Don't know what you mean about it being too big... it opens fine in Notepad++ on my computer.

As for implementing this in Celestia, I am working on it.

I decided to take a look at the host star of the habitable zone gas giant, HD 28185b.

Using the apparent magnitude of 7.81 from SIMBAD...

Old parallax = 25.28 ± 1.08 mas which translates to a luminosity of 1.01 ± 0.09 times solar
New parallax = 21.97 ± 0.87 mas which translates to a luminosity of 1.33 ± 0.11 times solar

From inner and outer habitable zone boundaries in our solar system of 0.95 and 1.15 AU respectively (from here), the habitable zone boundaries become:

Old luminosity: 0.95 ± 0.09 AU to 1.16 ± 0.10 AU
New luminosity: 1.10 ± 0.09 AU to 1.33 ± 0.11 AU

The planet orbits at 1.031 ± 0.060 AU according to the Catalog of Nearby Exoplanets...

It looks like it might be a bit humid on any "Earthlike" moons...