2000 WT169
compiled by Wm. Robert Johnston
last updated 6 December 2009
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: |
44.8728 AU
| |
orbital period P: |
300.60 y (=109,793 d)
| |
eccentricity e: |
0.013401
| |
perihelion distance q: |
44.2715 AU
| |
aphelion distance Q: |
45.4742 AU
| |
inclination i: |
1.74566°
| |
argument of perihelion omega: |
228.5°
| |
ascending node OMEGA: |
110.466°
| |
mean anomaly M: |
98.7°
| |
perihelion passage TP: |
1927-08-18
| |
Epoch: |
04 JAN 2010
| |
data arc: |
2000-2008 (28 obs.)
|
orbital data, secondary:
|
semimajor axis a: |
(~2,800 km separation)
| |
semimajor axis/primary radius a/Rp: |
(~27?)
| |
orbital period P: |
(~15 d?)
| |
eccentricity e: |
?
| |
other data, primary:
|
diameter: |
(205 km?)
| |
absolute magnitude H: |
6.1 [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: |
(168 km?)
| |
diameter ratio Ds/Dp: |
(0.82)
| |
component magnitude difference: |
0.43 [I9076]
| |
rotation period: |
?
|
|
--2000 WT169--discovery and notes:
Primary discovered by D. C. Jewitt, S. S. Sheppard, and Y. R. Fernandez on 23 November 2000 from Mauna Kea Observatory, Hawaii.
Companion discovered by Knoll et al. from Hubble Space Telescope observations; announced 27 September 2009.
See more information and links at
Asteroid/Comet Connection Catchall Catalog page
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
© 2009 by Wm. Robert Johnston.
Last modified 6 December 2009.
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