(48639) 1995 TL8
compiled by Wm. Robert Johnston
last updated 9 October 2005
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: |
52.2176197329253 AU
| |
orbital period P: |
377.3408 y (=137,825 d)
| |
eccentricity e: |
0.232979444804637
| |
perihelion distance q: |
40.0519876785287 AU
| |
aphelion distance Q: |
64.38325179 AU
| |
inclination i: |
0.243763844619077°
| |
argument of perihelion omega: |
83.4537819393876°
| |
ascending node OMEGA: |
261.013638359201°
| |
mean anomaly M: |
32.4694252355857°
| |
perihelion passage TP: |
1971-01-18.2843009
| |
Epoch: |
30 JAN 2005
| |
data arc: |
1995-2003 (46 obs.)
| orbital data, secondary:
|
semimajor axis a: |
(420 km separation) [S05a]
| |
semimajor axis/primary radius a/Rp: |
(2.4?)
| |
orbital period P: |
(0.5 d?)
| |
eccentricity e: |
?
| |
inclination i: |
?
| |
other data, primary:
|
diameter: |
(352 km?)
| |
absolute magnitude H: |
5.28 [JPL]
| |
rotation period: |
?
| |
amplitude delta M: |
?
| |
color index B-V: |
1.04 ± 0.01 [B05c]
| |
color index V-R: |
0.69 ± 0.01 [B05c]
| |
color index V-I: |
1.33 ± 0.01 [B05c]
| |
color index V-J: |
2.42 ± 0.05 [B05c]
| |
color index V-H: |
2.82 ± 0.07 [B05c]
| |
slope parameter G: |
(0.15) [a]
| |
geometric albedo: |
(0.09) [a]
| |
mass (system): |
?
| |
density: |
?
| |
BBFB type: |
RR [B05c]
|
other data, secondary:
|
diameter: |
(161 km?)
| |
diameter ratio Ds/Dp: |
(0.46)
| |
component magnitude difference: |
1.7 [S05a]
| |
rotation period: |
?
|
|
--(48639) 1995 TL8--discovery and notes:
Primary discovered 15 October 1995 by A. Gleason from Steward Observatory.
Companion discovered by Denise C. Stephens and Keith S. Noll from Hubble Space Telescope observations of 9 November 2002; announced 5 October 2005.
See more information and links at
Asteroid/Comet Connection Catchall Catalog page
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Gladman, B., Holman, M., Grav, T., Kavelaars, J., Nicholson, P., Aksnes, K., & Petit, J.-M. 2002, Icarus Evidence for an Extended Scattered Disk
- Gehrels, T., Scotti, J. V., Montani, J. L., Gleason, A. E., & Marsden, B. G. 2000, Minor Planet Electronic Circulars 1995 TL8
© 2005 by Wm. Robert Johnston.
Last modified 9 October 2005.
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