2003 QA91
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: |
44.4350708 AU
| |
orbital period P: |
296.21 y (=108,190.0 d)
| |
eccentricity e: |
0.0647277
| |
perihelion distance q: |
41.5588909 AU
| |
aphelion distance Q: |
47.3112507 AU
| |
inclination i: |
2.41268°
| |
argument of perihelion omega: |
330.65699°
| |
ascending node OMEGA: |
104.63124°
| |
mean anomaly M: |
261.88292°
| |
perihelion passage TP: |
2088-01-01.9
| |
Epoch: |
10 APR 2007
| |
data arc: |
2003-2006 (17 obs.)
|
orbital data, secondary:
|
semimajor axis a: |
(1,800 km separation?) [N07a]
| |
semimajor axis/primary radius a/Rp: |
(14?)
| |
orbital period P: |
(~5 d?)
| |
eccentricity e: |
?
| |
other data, primary:
|
diameter: |
(265 km?)
| |
absolute magnitude H: |
5.4 [JPL]
| |
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: |
(0.09) assumed
| |
mass: |
?
| |
density: |
?
| |
type: |
?
|
other data, secondary:
|
diameter: |
(253 km?)
| |
diameter ratio Ds/Dp: |
(0.95)
| |
component magnitude difference: |
0.1 ± 0.6 [N07a]
| |
rotation period: |
?
|
|
--2003 QA91--discovery and notes:
Primary discovered 24 August 2003 by M. W. Buie from Cerro Tololo Observatory, La Serena, Chile.
Companion reported March 2007.
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Noll, Keith S., Grundy, William M., Chiang, Eugene I., Margot, Jean-Luc, & Kern, Susan D. 2007, ArXiv Astrophysics e-prints Binaries in the Kuiper Belt
- Wasserman, L. H., Trilling, D. E., Lovering, J. R., Buie, M. W., Elliot, J. L., Kane, J. F., Teyssier, M. E., Millis, R. L., Kern, S. D., Cole, S. J., Jones, T. A., Vaz, A. L., Gulbis, A. A. S., Leung, M., Vax, A. L., Clancy, K. B., & Marsden, B. G. 2004, Minor Planet Electronic Circulars 2003 KO20, 2003 QA91, 2003 QB92
- Marsden, B. G. 2003, Minor Planet Electronic Circulars TEN TNOs
© 2007, 2008 by Wm. Robert Johnston.
Last modified 26 November 2008.
Return to Home. Return to Astronomy and Space. Return to Asteroids with Satellites.