2006 GY2

compiled by Wm. Robert Johnston
last updated 25 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: 1.8546853 AU
orbital period P: 2.530 y (=922.5794 d)
eccentricity e: 0.49432016
perihelion distance q: 0.93787695 AU
aphelion distance Q: 2.7714936 AU
inclination i: 30.59322570°
argument of perihelion omega: 216.67934766°
ascending node OMEGA: 54.402762522°
mean anomaly M: 320.848170°
perihelion passage TP: 2006-06-14.335199
Epoch: 06 MAR 2006
data arc: 37 days (260 obs.)

orbital data, secondary:
semimajor axis a: >=0.5 km [C534]
semimajor axis/primary radius a/Rp: (~2.7)
orbital period P: 11.7±0.2 h [B06f]
eccentricity e: ?

other data, primary:
diameter: 0.45 km [B06e]
0.4 km [C534]
absolute magnitude H: 18.7 ± 0.4 [JPL]
rotation period: 2.27 ± 0.01 h [HHb]
amplitude delta M: ~0.10 [HHb]
color index B-V: ?
color index V-R: ?
color index R-I: ?
slope parameter G: (0.15) assumed
geometric albedo: (0.28)
mass: ?
density: ?
type: ?

other data, secondary:
diameter: 80 m [C534]
diameter ratio Ds/Dp: ?
component magnitude difference: ?
rotation period: ?

--2006 GY2--discovery and notes:

Primary discovered 9 April 2006.

Companion discovered by L. A. M. Benner, M. C. Nolan, M. K. Shepard, J. D. Giorgini, S. J. Ostro, M. W. Busch, and A. A. Hine on 15 May 2006 based on radar observations from Arecibo and Goldstone.

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


© 2006-2007, 2008 by Wm. Robert Johnston.
Last modified 25 November 2008.
Return to Home. Return to Astronomy and Space. Return to Asteroids with Satellites.