Extrasolar.ssc update

[granthutchison]

I've just added the recent discovery, HD 37605 b, to extrasolar.ssc.
At the same time, I've done a major revision to better model tidal spindown and oblateness, so that we have appropriate rotational flattening for low-mass objects that can be expected to have retained their primordial rotation because they're far from the parent star.
All built on estimates and assumptions, of course (the assumptions are detailed in comments at the start of the file for anyone who's interested) - but all those perfectly spherical gas giants were starting to get on my nerves ...
Get the file from the CVS tree at: http://cvs.sourceforge.net/viewcvs.py/celestia/celestia/data/extrasolar.ssc

Grant

[Dollan]

Sweet!

Are there any star add on files, though, that should be used in conjunction with this, if one has the latest version of Celestia?

Thanks...

...John...

[selden]

Yes.





Oh, you want to know what it is???

http://www.lepp.cornell.edu/~seb/celestia/hutchison/missing-stars.html
lists the stars with planets that aren't in Celestia, while
http://www.lepp.cornell.edu/~seb/celestia/hutchison/nearstars.html
lists the stars within about 25LY that Hipparcos didn't include for one reason or another.

[Dollan]

**chuckling** Thanks Selden.

I don't know why, but these things always tend to confuse me.... heh.

...John...

[ajtribick]

I found this while going through the CVS tree... looks like quite a few updates to the file.

Just a question: what is the reason for not including the pulsar planets around PSR 1257+12 and B1620-26? The entries for 1257+12 are quite detailed at the Extrasolar Planets Encyclopaedia.

Given that the OGLE planets are included when the relevant stars aren't in the default database, this does seem a little odd.

[granthutchison]

Just a question: what is the reason for not including the pulsar planets around PSR 1257+12 and B1620-26?

No reason.

Grant

[symaski62]

SSC => sans (stars.dat)

stc => avec (stars.dat)

OGLE-TR-56.ssc

Code: Select all

"b" "OGLE-TR-56"
{
   Texture "gasgiant.jpg"
   NightTexture "gasgiantnight.jpg"

   Mass       460     # M.sin(i) = 1.45 jupiters
   Radius     86100
   Oblateness 0.01

   InfoURL "http://www.obspm.fr/encycl/OGLE-TR-56.html"

   EllipticalOrbit {
      Period          0.0033
      SemiMajorAxis   0.0225
      Eccentricity    0
      Inclination     89.4
      AscendingNode   260.3
      ArgOfPericenter 84
      MeanAnomaly     213
   }

   Obliquity             89   # guess, to match inclination
   EquatorAscendingNode 260   # guess, to match ascending node

   # likely to be in captured synchronous rotation
}

----------------------------------------------------
OGLE-TR-56.stc

Code: Select all

# Four missing stars required for extrasolar
# planets - use if you have installed Pascal
# Hartmann's extended stellar dataset


355000  "OGLE-TR-56"
{
   RA 269.148070
   Dec -29.539412
   Distance 8900      # to give known apparent magnitude
   SpectralType "G0V" # from estimated mass and radius
   AbsMag 4.4         # from spectral class
}


------------------------------------------------
http://cvs.sourceforge.net/viewcvs.py/c ... asolar.ssc
nouveau ==>> extrasolar.stc (avec stars.dat)

merci

PS: je sais VU SSC et STC

[granthutchison]

Voyez http://www.lepp.cornell.edu/~seb/celestia/hutchison/missing-stars.html:
basicextrasolars.stc => avec stars.dat de Celestia.
reducedextrasolars.stc => avec stars.dat de Pascal Hartmann.

Stc, c'est toujour pour les ?toiles suppl?mentaires.

Ssc, c'est pour les plan?tes.

Grant

[symaski62]

OUI OK MERCI

suite

attention charge

C:\Program Files\celestia\data\extrasolar.ssc
C:\Program Files\celestia\data\basicextrasolars.stc ou reducedextrasolars.stc
||
charge
||
\/
C:\Program Files\Celestia\extras\extrasolar\extrasolar.ssc
C:\Program Files\Celestia\extras\basicextrasolars.stc ou reducedextrasolars.stc


oui, L? OGLE-TR-56, OGLE-TR-113, OGLE-TR-132 et BD-10 3166

[granthutchison]

Non, non. C'est:

C:\Program Files\celestia\data\extrasolar.ssc
C:\Program Files\celestia\extras\basicextrasolars.stc ou reducedextrasolars.stc

Grant

[symaski62]

ok merci

[danielj]

I put the missing stars in Extras folder,but OGLE-TR-56 and others don?t show up.Even when I put 355000:OGLE-TR-56 in starnames.dat.What is missing?Well,when I type,the name appears,but when I put Enter,it stays in the same place.Can we help me?





Oh, you want to know what it is???

http://www.lepp.cornell.edu/~seb/celestia/hutchison/missing-stars.html
lists the stars with planets that aren't in Celestia, while
http://www.lepp.cornell.edu/~seb/celestia/hutchison/nearstars.html
lists the stars within about 25LY that Hipparcos didn't include for one reason or another.[/quote]

[granthutchison]

Just a question: what is the reason for not including the pulsar planets around PSR 1257+12 and B1620-26?

No reason.

The pulsar planets have now been added to extrasolar.ssc. The new file is on the CVS tree at:
http://cvs.sourceforge.net/viewcvs.py/celestia/celestia/data/extrasolar.ssc
The pulsars are now defined (as neutron stars) in the "missing stars" stc at:
http://www.lns.cornell.edu/~seb/celestia/hutchison/missing-stars.html

Grant

[symaski62]

http://www.astrocosmos.net/canvas.php?rubrique=1
(fran?ais)