(55637) 2002 UX25
compiled by Wm. Robert Johnston
last updated 4 March 2007
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: |
42.547 AU
| |
orbital period P: |
277.53 y (=101,368.1 d)
| |
eccentricity e: |
0.1408
| |
perihelion distance q: |
36.555 AU
| |
aphelion distance Q: |
48.539 AU
| |
inclination i: |
19.4738°
| |
argument of perihelion omega: |
278.48°
| |
ascending node OMEGA: |
204.6348°
| |
mean anomaly M: |
282.65°
| |
perihelion passage TP: |
2066-11-26.2
| |
Epoch: |
10 APR 2007
| |
data arc: |
1991-2005 (51 obs.)
|
orbital data, secondary:
|
semimajor axis a: |
(5,000 km separation) [I8812]
| |
semimajor axis/primary radius a/Rp: |
(15?)
| |
orbital period P: |
(~8 d?)
| |
eccentricity e: |
?
| |
other data, primary:
|
diameter: |
681 +116/-114 [S07a] (combined)
(649 km)
| |
absolute magnitude H: |
3.6 ± 0.55 [JPL]
| |
rotation period: |
14.382±0.001 h? [R05c]
(or 7.1908h, 16.782 h) [R05c]
| |
amplitude delta M: |
0.21±0.06 [R05c]
| |
color index B-V: |
1.12 ± 0.26 [R05c]
| |
color index V-R: |
0.61 ± 0.12 [R05c]
| |
color index V-I: |
(1.05) [R07a]
| |
slope parameter G: |
(0.15) assumed
| |
geometric albedo: |
0.115 +0.051/-0.031 [S07a]
| |
mass: |
?
| |
density: |
?
| |
type: |
?
|
other data, secondary:
|
diameter: |
(205 ± 55 km)
| |
diameter ratio Ds/Dp: |
(0.32 ± 0.03)
| |
component magnitude difference: |
2.5±0.2 [I8812]
| |
rotation period: |
?
|
|
--(55637) 2002 UX25--discovery and notes:
Primary discovered 30 October 2002 by the Spacewatch program at Kitt Peak Observatory, USA. Linked to prediscovery observations from 12 October 1991.
Companion discovered by M. E. Brown and T.-A. Suer using Hubble Space Telescope observations from 26 August 2005; reported 22 February 2007.
See more information and links at Asteroid/Comet Connection Catchall Catalog page
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Rousselot, P., Petit, J.-M., Poulet, F., & Sergeev, A. 2005, Icarus Photometric study of Centaur (60558) 2000 EC98 and trans-neptunian object (55637) 2002 UX25 at different phase angles
- Stoss, R., Helin, E. F., Pravdo, S., Lawrence, K. J., Rabinowitz, D. L., Sheppard, S. S., Kervin, P., Maeda, R., Africano, J., Hicks, M., Haver, R., Pelloni, A., Forti, G., Thicksten, R., & Marsden, B. G. 2002, Minor Planet Electronic Circulars 2002 UX25
- Descour, A. S., Holvorcem, P. R., Schwartz, M., & Marsden, B. G. 2002, Minor Planet Electronic Circulars 2002 UX25
© 2007 by Wm. Robert Johnston.
Last modified 4 March 2007.
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