(7088) Ishtar
compiled by Wm. Robert Johnston
last updated 14 October 2006
Orbital elements and other data (Assumed or derived values in parenthesis, my estimates in italics and parenthesis. Source identifications in brackets, see this link for sources):
orbital data, primary (osculating elements) [JPL]:
|
semimajor axis a: |
1.98111738502699 AU
| |
orbital period P: |
2.7885 y (=1,018.5 d)
| |
eccentricity e: |
0.38986847880355
| |
perihelion distance q: |
1.20874216379525 AU
| |
aphelion distance Q: |
2.75349261 AU
| |
inclination i: |
8.29448266185195°
| |
argument of perihelion omega: |
354.58861833125°
| |
ascending node OMEGA: |
102.752370663692°
| |
mean anomaly M: |
28.0087683385922°
| |
perihelion passage TP: |
2005-12-16.7580323
| |
Epoch: |
6 MAR 2006
| |
data arc: |
1981-2006 (290 obs.)
| orbital data, secondary:
|
semimajor axis a: |
(3 km?)
| |
semimajor axis/primary radius a/Rp: |
(4?)
| |
orbital period P: |
20.65±0.02 h [OOf]
| |
eccentricity e: |
?
| |
other data, primary:
|
diameter: |
(1.5 km?)
| |
absolute magnitude H: |
16.7 [JPL]
| |
rotation period: |
2.6790±0.0002 [OOf]
| |
amplitude delta M: |
0.11 [OOf]
| |
color index B-V: |
?
| |
color index V-R: |
?
| |
color index R-I: |
?
| |
slope parameter G: |
(0.15) [a]
| |
geometric albedo: |
?
| |
mass: |
?
| |
density: |
?
| |
type: |
?
|
other data, secondary:
|
diameter: |
(0.6 km?)
| |
diameter ratio Ds/Dp: |
0.42 [C384]
| |
component magnitude difference: |
(1.9)
| |
rotation period: |
?
|
|
--(7088) Ishtar--discovery and notes:
Primary discovered 1 January 1992 by C. S. Shoemaker and E. M. Shoemaker from Palomar Observatory, California, USA. Alternate designation 1992 AA.
Secondary announced 31 January 2006 by Ondrejov Observatory based on lightcurve observations from 23-29 January 2006.
See more information and links at
Asteroid/Comet Connection Catchall Catalog page
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
© 2006 by Wm. Robert Johnston.
Last modified 14 October 2006.
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