2004 PB108
compiled by Wm. Robert Johnston
last updated 28 December 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: |
45.0123 AU
| |
orbital period P: |
302.00 y (=110,305 d)
| |
eccentricity e: |
0.10163
| |
perihelion distance q: |
40.4378 AU
| |
aphelion distance Q: |
49.5869 AU
| |
inclination i: |
20.202°
| |
argument of perihelion omega: |
272.668°
| |
ascending node OMEGA: |
147.423°
| |
mean anomaly M: |
295.612°
| |
perihelion passage TP: |
2061-04-14.6
| |
Epoch: |
10 APR 2007
| |
data arc: |
2004-2005 (14 obs.)
|
orbital data, secondary:
|
semimajor axis a: |
10,480 ± 200 km [G09a]
| |
semimajor axis/primary radius a/Rp: |
(87)
| |
orbital period P: |
97.05 ± 0.10 d [G09a]
| |
eccentricity e: |
0.441 ± 0.012 [G09a]
| |
inclination i: |
89.0° ± 1.1° [G09a]
106.55° ± 0.99° [G09a]
| |
other data, primary:
|
diameter: |
(241 km ± 55 km) [G09a]
| |
absolute magnitude H: |
7.083 ± 0.016 [G09a]
| |
rotation period: |
?
| |
amplitude delta M: |
?
| |
color index B-V: |
?
| |
color index V-R: |
?
| |
color index B-R: |
?
| |
color index V-I: |
?
| |
slope parameter G: |
(0.15) assumed
| |
geometric albedo: |
0.035 ± 0.015 [G09a]
| |
mass: |
(9.68 ± 0.57) x1018 kg [G09a]
| |
density: |
?
| |
type: |
?
|
other data, secondary:
|
diameter: |
(131 km ± 32 km)
| |
diameter ratio Ds/Dp: |
(0.54 ± 0.01)
| |
component magnitude difference: |
1.321 ± 0.032 [G09a]
| |
rotation period: |
?
|
|
--2004 PB108--discovery and notes:
Primary discovered 14 August 2004 by M. W. Buie.
Companion discovered by K. S. Noll, W. M. Grundy, S. D. Kern, H. F. Levison, and D. C. Stephens from Hubble Space Telescope observations obtained 4 August 2006; reported 3 March 2007.
See more information and links at Asteroid/Comet Connection Catchall Catalog page
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
© 2007, 2008 by Wm. Robert Johnston.
Last modified 28 December 2008.
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