2000 QL251
compiled by Wm. Robert Johnston
last updated 28 December 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: |
47.650 AU
| |
orbital period P: |
328.93 y (=120,141 d)
| |
eccentricity e: |
0.2156
| |
perihelion distance q: |
37.379 AU
| |
aphelion distance Q: |
57.921 AU
| |
inclination i: |
3.68125°
| |
argument of perihelion omega: |
98.469°
| |
ascending node OMEGA: |
223.2087°
| |
mean anomaly M: |
24.60°
| |
perihelion passage TP: |
1984-04-01.3
| |
Epoch: |
22 SEP 2006
| |
data arc: |
2000-2005 (16 obs.)
|
orbital data, secondary:
|
semimajor axis a: |
5,002 ± 27 km [G09a]
| |
semimajor axis/primary radius a/Rp: |
(68)
| |
orbital period P: |
56.451 ± 0.025 d [G09a]
| |
eccentricity e: |
0.4871 ± 0.0065 [G09a]
| |
inclination i: |
127.78° ± 0.62° [G09a]
45.62° ± 0.66° [G09a]
| |
other data, primary:
|
diameter: |
(148 km ± 34 km) [G09a]
| |
absolute magnitude H: |
7.148 ± 0.016 combined [G09a]
| |
rotation period: |
?
| |
amplitude delta M: |
?
| |
color index B-V: |
?
| |
color index V-R: |
?
| |
color index R-I: |
?
| |
slope parameter G: |
(0.15) assumed
| |
geometric albedo: |
0.07 ± 0.03 [G09a]
| |
mass: |
(3.112 ± 0.051) x1018 kg [G09a]
| |
density: |
?
| |
type: |
?
|
other data, secondary:
|
diameter: |
(143 km ± 36 km)
| |
diameter ratio Ds/Dp: |
(0.97 ± 0.02)
| |
component magnitude difference: |
0.073 ± 0.048 [G09a]
| |
rotation period: |
?
|
|
--2000 QL251--discovery and notes:
Primary discovered 25 August 2000 by M. W. Buie from Cerro Tololo Observatory, La Serena.
Companion discovered by K. S. Noll, D. C. Stephens, W. M. Grundy, and H. F. Levison from Hubble Space Telescope observations 25 July 2006, reported 12 September 2006.
See more information and links at Asteroid/Comet Connection Catchall Catalog page
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Romanishin, W., Tegler, S. C., & Marsden, B. G. 2001, Minor Planet Electronic Circulars 2000 QL251
- Wasserman, L. H., Buie, M. W., Kern, S. D., Millis, R. L., Elliot, J. L., & Marsden, B. G. 2001, Minor Planet Electronic Circulars Seven TNOs
© 2006, 2008 by Wm. Robert Johnston.
Last modified 28 December 2008.
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