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Extrasolar.ssc update
Posted: 12.07.2004, 14:46
by 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
Posted: 12.07.2004, 14:56
by 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...
Posted: 12.07.2004, 16:04
by 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.
Posted: 12.07.2004, 16:16
by Dollan
**chuckling** Thanks Selden.
I don't know why, but these things always tend to confuse me.... heh.
...John...
Posted: 12.07.2004, 19:38
by 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.
Posted: 12.07.2004, 19:49
by granthutchison
chaos syndrome wrote:Just a question: what is the reason for not including the pulsar planets around PSR 1257+12 and B1620-26?
No reason.
Grant
Posted: 12.07.2004, 21:15
by 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
}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
}
nouveau ==>> extrasolar.stc (avec stars.dat)
merci
PS: je sais VU SSC et STC
Posted: 12.07.2004, 22:07
by 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
Posted: 12.07.2004, 23:13
by 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
Posted: 12.07.2004, 23:28
by granthutchison
Non, non. C'est:
C:\Program Files\celestia\data\extrasolar.ssc
C:\Program Files\celestia\extras\basicextrasolars.stc ou reducedextrasolars.stc
Grant
Posted: 13.07.2004, 00:04
by symaski62
ok merci
Posted: 13.07.2004, 17:21
by 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]
Posted: 15.07.2004, 21:27
by granthutchison
granthutchison wrote:chaos syndrome wrote: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
Posted: 17.07.2004, 21:45
by symaski62
