(175706) 1996 FG3

compiled by Wm. Robert Johnston
last updated 1 March 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: 1.05426998 AU
orbital period P: 1.0824 y (=395.39046 d)
eccentricity e: 0.3498901
perihelion distance q: 0.6853913 AU
aphelion distance Q: 1.42314861 AU
inclination i: 1.990362°
argument of perihelion omega: 23.9238°
ascending node OMEGA: 299.8817°
mean anomaly M: 328.8244°
perihelion passage TP: 2008-06-17.2403
Epoch: 14 MAY 2008
data arc: 1996-2008 (364 obs.)

orbital data, secondary:
semimajor axis a: (2.4 km)
semimajor axis/primary radius a/Rp: 3.4 ± 0.6 [P00a]
orbital period P: 16.135 ± 0.005 h [P00a]
eccentricity e: 0.05 ± 0.05 [P00a]

other data, primary:
diameter: 1.4 km [P00a]
absolute magnitude H: 17.76 ± 0.03 [P00a]
18.21 ± 0.89 [JPL]
rotation period: 3.5942 ± 0.0002 h [P00a]
amplitude delta M: 0.08 [H03a]
color index B-V: 0.708 ± 0.005 [P00a]
color index V-R: 0.380 ± 0.003 [P00a]
color index R-I: 0.334 ± 0.003 [P00a]
slope parameter G: (0.15) [a]
geometric albedo: (0.06) [a]
mass: (2.1x1012 kg)
density: 1.4 ± 0.3 g/cm3 [M00b]
type: C [SBd]

other data, secondary:
diameter: (0.43 km)
diameter ratio Ds/Dp: 0.31 ± 0.02 [P00a]
component magnitude difference: ?
rotation period: ?

--(175706) 1996 FG3--discovery and notes:

Primary discovered 24 March 1996 by R. H. McNaught from Siding Spring Observatory, New South Wales, Australia. Permanent number assigned February 2008.

Companion discovered 10-18 December 1998 by P. Pravec, L. Sarounova, and M. Wolf from Ondrejov Observatory using lightcurve data; announced 26 December 1998.

See more information and links at Asteroid/Comet Connection Catchall Catalog page

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


© 2001-2005, 2008 by Wm. Robert Johnston.
Last modified 1 March 2008.
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