Comment 19 for bug 1124221

Hello Alexander,

Just to understand this is code not part of the main body of Stellarium,
but to make the cat files of the Hipparcos stars, correct?

On 23 February 2013 12:30, Alexander Wolf <email address hidden>wrote:

> Code for change epoch for preparation of star catalog is here:
>
> http://bazaar.launchpad.net/~stellarium/stellarium/trunk/view/head:/util/ParseHip.C#L122
>

So it is important to know that the value is of deltayears in line 122?
Is my assumption correct that deltayears = 'epoch of Stellarium' - 'epoch
of the stars' ?
'Epoch of Stellarium'=J2000.0? IS this the correct reference epoch of
Stellarium?
'epoch of stars' = J1991.25 (if using the original Hipparcos and *not* an
already converted Hipparcos)

Original Hipparcos cat (J1991.25) is at:
http://www.rssd.esa.int/index.php?project=HIPPARCOS&page=hipsearch (using
ID=32349)
A converted Hipparcos catelogue (J2000.0) is at:
http://simbad.u-strasbg.fr/simbad/sim-id?Ident=sirius&NbIdent=1&Radius=2&Radius.unit=arcmin&submit=submit+id

All the best,

Victor