2007 TY430
compiled by Wm. Robert Johnston
last updated 29 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: |
39.2166331 AU
| |
orbital period P: |
245.59 y (=89,702.4 d)
| |
eccentricity e: |
0.2630178
| |
perihelion distance q: |
28.9019605 AU
| |
aphelion distance Q: |
49.5313057 AU
| |
inclination i: |
11.28581°
| |
argument of perihelion omega: |
204.01037°
| |
ascending node OMEGA: |
196.69653°
| |
mean anomaly M: |
347.55238°
| |
perihelion passage TP: |
2016-11-09.6
| |
Epoch: |
14 MAY 2008
| |
data arc: |
2007-2008 (14 obs.)
|
orbital data, secondary:
|
semimajor axis a: |
(13,000 km separation) [I8962]
| |
semimajor axis/primary radius a/Rp: |
(180?)
| |
orbital period P: |
(~240 d?)
| |
eccentricity e: |
?
| |
other data, primary:
|
diameter: |
(142 km?)
| |
absolute magnitude H: |
6.7 [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: |
(142 km?)
| |
diameter ratio Ds/Dp: |
(~1.0)
| |
component magnitude difference: |
<0.1 [I8962]
| |
rotation period: |
?
|
|
--2007 TY430--discovery and notes:
Primary discovered 14 October 2007 from Mauna Kea observatory.
Companion discovered by S. Sheppard and C. Trujillo, reported 1 August 2008.
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
© 2008 by Wm. Robert Johnston.
Last modified 29 November 2008.
Return to Home. Return to Astronomy and Space. Return to Asteroids with Satellites.