1999 RY214
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: |
45.3613276 AU
| |
orbital period P: |
305.52 y (=111,591 d)
| |
eccentricity e: |
0.1823853
| |
perihelion distance q: |
37.0880883 AU
| |
aphelion distance Q: |
53.6345669 AU
| |
inclination i: |
13.67541°
| |
argument of perihelion omega: |
69.94628°
| |
ascending node OMEGA: |
327.22043°
| |
mean anomaly M: |
353.10387°
| |
perihelion passage TP: |
2015-11-11.6
| |
Epoch: |
04 JAN 2010
| |
data arc: |
1999-2008 (26 obs.)
|
orbital data, secondary:
|
semimajor axis a: |
(~1,800 km separation)
| |
semimajor axis/primary radius a/Rp: |
(~30?)
| |
orbital period P: |
(~20 d?)
| |
eccentricity e: |
?
| |
other data, primary:
|
diameter: |
(125 km?)
| |
absolute magnitude H: |
7.4 [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: |
(75 km?)
| |
diameter ratio Ds/Dp: |
(0.61)
| |
component magnitude difference: |
1.09 [I9075]
| |
rotation period: |
?
|
|
--1999 RY214--discovery and notes:
Primary discovered by D. C. Jewitt, J. X. Luu, and C. A. Trujillo on 6 September 1999 from Mauna Kea Observatory, Hawaii.
Companion discovered by Knoll et al. from Hubble Space Telescope observations; announced 24 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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