(6244) Okamoto

compiled by Wm. Robert Johnston
last updated 19 October 2006

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: 2.1595105 AU
orbital period P: 3.1735 y (=1,159.1 d)
eccentricity e: 0.1525183
perihelion distance q: 1.8301456 AU
aphelion distance Q: 2.4888754 AU
inclination i: 5.39786°
argument of perihelion omega: 51.59654°
ascending node OMEGA: 331.43927°
mean anomaly M: 344.06977°
perihelion passage TP: 2006-11-12.292
Epoch: 22 SEP 2006
data arc: 1933-2006 (430 obs.)

orbital data, secondary:
semimajor axis a: (15 km?)
semimajor axis/primary radius a/Rp: (4?)
orbital period P: 20.35±0.01 h [H06a]
eccentricity e: ?

other data, primary:
diameter: (7 km?)
absolute magnitude H: 13.6 [JPL]
rotation period: 2.8942±0.0004 h [H06a]
amplitude delta M: 0.11 [H06a]
color index B-V: ?
color index V-R: ?
color index R-I: ?
slope parameter G: (0.15) [a]
geometric albedo: ?
mass: ?
density: ?
type: ?

other data, secondary:
diameter: (1.7 km?)
diameter ratio Ds/Dp: 0.25±0.03 [H06a]
component magnitude difference: (3.0±0.3)
rotation period: ?

--(6244) Okamoto--discovery and notes:

Primary discovered 20 August 1990 by T. Seki at Geisei, but identified in prediscovery observations to 1933. Alternate designations 1990 QF, 1952 SG1, 1987 SL25.

Secondary reported by D. Higgins and P. Kusnirak, Ondrejov Observatory NEO Photometric program, announced 19 October 2006, based on lightcurve observations from 26 September 2006 to 3 October 2006.

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

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:

© 2006 by Wm. Robert Johnston.
Last modified 19 October 2006.
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