2003 UN284
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: |
42.4987531 AU
| |
orbital period P: |
277.0591 y (=101198 d)
| |
eccentricity e: |
0.0082108
| |
perihelion distance q: |
42.1498043 AU
| |
aphelion distance Q: |
42.84770186 AU
| |
inclination i: |
3.07769°
| |
argument of perihelion omega: |
291.01838°
| |
ascending node OMEGA: |
36.06211°
| |
mean anomaly M: |
88.42703°
| |
perihelion passage TP: |
1937-07-29.2117297
| |
Epoch: |
18 AUG 2005
| |
data arc: |
2003-2005 (23 obs.)
| orbital data, secondary:
|
semimajor axis a: |
(58,000-60,600 km separation) [I8251]
| |
semimajor axis/primary radius a/Rp: |
(930?)
| |
orbital period P: |
(3,300 d?)
| |
eccentricity e: |
?
| |
other data, primary:
|
diameter: |
(128 km?)
| |
absolute magnitude H: |
7.2 [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: |
(95 km?)
| |
diameter ratio Ds/Dp: |
(0.74)
| |
component magnitude difference: |
0.59 ± 0.21
0.70 ± 0.15 [I8251]
| |
rotation period: |
?
|
|
--2003 UN284--discovery and notes:
Primary discovered 24 October 2003 by L. H. Wasserman, D. E. Trilling, E. I. Chiang, J. R. Lovering, K. B. Clancy, and S. D. Kern at Kitt Peak Observatory.
Companion discovered 24 October 2003 by the Deep Ecliptic Survey Team (R. L. Millis et al.) using the Kitt Peak Mayall Telescope; announced 5 December 2003.
See more information and links at Asteroid/Comet Connection Catchall Catalog page
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Kern, S. D., Schechter, P. L., Pittichova, J., Meech, K. J., Wasserman, L.
H., Trilling, D. E., Buie, M. W., Millis, R. L., Chiang, E. I., Hylton, S.
N., Clancy, K. B., Lovering, J. R., & Marsden, B. G. 2004, Minor Planet
Electronic Circulars 2002 VB131, 2003 UN284
- Wasserman, L. H., Trilling, D. E., Chiang, E. I., Lovering, J. R., Clancy, K. B., Kern, S. D., & Marsden, B. G. 2003, Minor Planet Circulars 2003 UN284
© 2003-2005, 2008 by Wm. Robert Johnston.
Last modified 26 November 2008.
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