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C/2001 Q4
Posted: 29.04.2004, 11:42
by symaski62
Code: Select all
"C/2001 Q4" "Sol"
{
Class "comet"
Texture "asteroid.jpg"
Mesh "asteroid.cms"
Radius ????
EllipticalOrbit
{
Period ????
SemiMajorAxis ????
Eccentricity 1.000522818
Inclination 99.6423878
AscendingNode 210.2786496
ArgOfPericenter 1.207514
MeanAnomaly 359.9997506
Epoch 2453141.4684405
}
}merci i am french
Posted: 29.04.2004, 15:57
by granthutchison
Code: Select all
"C/2001 Q4" "Sol"
{
Class "comet"
Texture "asteroid.jpg"
Mesh "asteroid.cms"
Radius 5 #???
EllipticalOrbit
{
Period 78923.351
PericenterDistance 0.961953788
Eccentricity 1.000522818
Inclination 99.6423878
AscendingNode 210.2786496
ArgOfPericenter 1.207514
MeanAnomaly 0
Epoch 2453141.4684405
}
}Grant
Posted: 29.04.2004, 17:23
by symaski62
Period #calculated: (q/(1-e))**1.5
Posted: 29.04.2004, 18:04
by granthutchison
symaski62 wrote:Period #calculated: (q/(e-1))**1.5
Mean motion (n) for hyperbolic orbits = ((e-1)/q)^1.5
"Period" used by Celestia is the inverse of mean motion.
Grant
Posted: 29.04.2004, 19:50
by symaski62
je suis mal
((1-1.000522818)/0.961953788)^1.5 = error
moi fran?ais
merci
Posted: 29.04.2004, 21:03
by granthutchison
Je m'excuse – pour des orbites hyperboliques c'est (1-e), pas (e-1).
Grant
Posted: 29.04.2004, 21:37
by symaski62
error VU rien
je vois l'ordinature avec "calc"
((1-Eccentricity)/PericenterDistance)^1.5
((1-1.000522818)/0.961953788)^1.5
((-0.000522818)/0.961953788)^1.5
-5.434959626^1.5 = -12.67052130
VU
Posted: 29.04.2004, 22:43
by granthutchison
Aaargh! J'avais raison la primi?re fois - c'est (e-1) pour des orbites hyperboliques:
(PericenterDistance/(Eccentricity-1))^1.5
= (0.961953788/0.000522818)^1.5
= 1839.940071^1.5
= 78923.351 (ann?es)
Grant
Posted: 29.04.2004, 22:57
by Guest
merci beaucoup!!!!
Posted: 30.04.2004, 07:52
by symaski62
merci beaucoup!!
Posted: 16.05.2004, 00:07
by Guest
Does anybody took a picture (or more) of C/2001 Q4 in the last days?
Posted: 16.05.2004, 08:12
by ElPelado
There are many pictures in teh internet
here you have one:
Posted: 18.05.2004, 12:00
by Adirondack
Does anybody took a picture (or more) of C/2001 Q4 in the last days?
Well, as I understand the question, Mr. Guest means photographs that somebody of us made of C/2001 Q4.
Did somebody?