(160256) 2002 PD149
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: |
42.926997 AU
| |
orbital period P: |
281.26 y (=102,729.2 d)
| |
eccentricity e: |
0.0613357
| |
perihelion distance q: |
40.54745 AU
| |
aphelion distance Q: |
45.55995 AU
| |
inclination i: |
4.90474°
| |
argument of perihelion omega: |
40.54745°
| |
ascending node OMEGA: |
103.47191°
| |
mean anomaly M: |
211.52758°
| |
perihelion passage TP: |
2123-04-09.9
| |
Epoch: |
10 APR 2007
| |
data arc: |
2000-2007 (15 obs.)
|
orbital data, secondary:
|
semimajor axis a: |
24,400 ± 300 km separation [I8866]
| |
semimajor axis/primary radius a/Rp: |
(230?)
| |
orbital period P: |
(~400 d?)
| |
eccentricity e: |
?
| |
other data, primary:
|
diameter: |
(213 km?)
| |
absolute magnitude H: |
6.0 [JPL]
| |
rotation period: |
?
| |
amplitude delta M: |
?
| |
color index B-V: |
?
| |
color index V-R: |
?
| |
color index B-R: |
?
| |
color index R-I: |
?
| |
slope parameter G: |
(0.15) assumed
| |
geometric albedo: |
(0.09) assumed
| |
mass: |
?
| |
density: |
?
| |
type: |
?
|
other data, secondary:
|
diameter: |
(178 km?)
| |
diameter ratio Ds/Dp: |
(0.83)
| |
component magnitude difference: |
0.4 [I8866]
| |
rotation period: |
?
|
|
--(160256) 2002 PD149--discovery and notes:
Primary discovered 10 August 2002 by M. W. Buie at Cerro Tololo.
Companion discovered by K. S. Noll, S. D. Kern, W. M. Grundy, D. C. Stephens, and H. F. Levison from Hubble Space Telescope observations obtained 22 May 2007, reported 31 August 2007.
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
© 2007, 2008 by Wm. Robert Johnston.
Last modified 26 November 2008.
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