2003 YU179
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: |
46.6008808 AU
| |
orbital period P: |
318.13 y (=116,196 d)
| |
eccentricity e: |
0.1578643
| |
perihelion distance q: |
39.2442654 AU
| |
aphelion distance Q: |
53.9574962 AU
| |
inclination i: |
4.86336°
| |
argument of perihelion omega: |
325.17124°
| |
ascending node OMEGA: |
126.45051°
| |
mean anomaly M: |
21.15989°
| |
perihelion passage TP: |
1991-04-24
| |
Epoch: |
04 JAN 2010
| |
data arc: |
2003-2008 (20 obs.)
|
orbital data, secondary:
|
semimajor axis a: |
(~2,300 km separation)
| |
semimajor axis/primary radius a/Rp: |
(~30?)
| |
orbital period P: |
(~20 d?)
| |
eccentricity e: |
?
| |
other data, primary:
|
diameter: |
(147 km?)
| |
absolute magnitude H: |
7.1 [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: |
(81 km?)
| |
diameter ratio Ds/Dp: |
(0.55)
| |
component magnitude difference: |
1.3 [I9076]
| |
rotation period: |
?
|
|
--2003 YU179--discovery and notes:
Primary discovered 24 December 2003 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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