2001 QQ322
compiled by Wm. Robert Johnston
last updated 26 November 2008
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: |
44.1083020 AU
| |
orbital period P: |
292.95 y (=106,998.9 d)
| |
eccentricity e: |
0.0491922
| |
perihelion distance q: |
41.9385176 AU
| |
aphelion distance Q: |
46.2780864 AU
| |
inclination i: |
3.95866°
| |
argument of perihelion omega: |
346.53361°
| |
ascending node OMEGA: |
76.38545°
| |
mean anomaly M: |
294.90358°
| |
perihelion passage TP: |
2061-05-03.9
| |
Epoch: |
14 MAY 2008
| |
data arc: |
2001-2005 (15 obs.)
|
orbital data, secondary:
|
semimajor axis a: |
(4,000 km separation) [I8925]
| |
semimajor axis/primary radius a/Rp: |
(40?)
| |
orbital period P: |
(~25 d?)
| |
eccentricity e: |
?
| |
other data, primary:
|
diameter: |
(205 km?)
| |
absolute magnitude H: |
6.0 [JPL]
| |
rotation period: |
?
| |
amplitude delta M: |
?
| |
color index B-V: |
?
| |
color index V-R: |
?
| |
color index B-R: |
?
| |
color index R-I: |
?
| |
slope parameter G: |
(0.15) assumed
| |
geometric albedo: |
(0.09) assumed
| |
mass: |
?
| |
density: |
?
| |
type: |
?
|
other data, secondary:
|
diameter: |
(187 km?)
| |
diameter ratio Ds/Dp: |
(0.9)
| |
component magnitude difference: |
0.2 [I8925]
| |
rotation period: |
?
|
|
--2001 QQ322--discovery and notes:
Primary discovered 21 August 2001 by M. W. Buie from Cerro Tololo Observatory, La Serena.
Companion discovered by K. S. Noll, W. M. Grundy, S. D. Kern, H. F. Levison, and D. C. Stephens from Hubble Space Telescope observations on 15 June 2007, announced 4 March 2008.
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
© 2008 by Wm. Robert Johnston.
Last modified 26 November 2008.
Return to Home. Return to Astronomy and Space. Return to Asteroids with Satellites.