(7225) Huntress

compiled by Wm. Robert Johnston
last updated 13 January 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: 2.3402782 AU
orbital period P: 3.58 y (=1,307.674 d)
eccentricity e: 0.2050115
perihelion distance q: 2.3402782 AU
aphelion distance Q: 2.8200621 AU
inclination i: 6.88117°
argument of perihelion omega: 203.10248°
ascending node OMEGA: 275.94771°
mean anomaly M: 331.93502°
perihelion passage TP: 2008-02-05.944
Epoch: 27 OCT 2007
data arc: 1983-2007 (445 obs.)

orbital data, secondary:
semimajor axis a: (10 km?)
semimajor axis/primary radius a/Rp: (3?)
orbital period P: 14.67 ± 0.01 h [C1233]
eccentricity e: ?

other data, primary:
diameter: (6.5 km?)
absolute magnitude H: 13.3 [JPL]
rotation period: 2.4400 ± 0.0001 h [C1233]
amplitude delta M: 0.11 [C1233]
color index B-V: ?
color index V-R: ?
color index R-I: ?
slope parameter G: (0.15) assumed
geometric albedo: (0.20) assumed
mass: ?
density: ?
type: S [JPL]

other data, secondary:
diameter: (1.4 km?)
diameter ratio Ds/Dp: 0.21 ± 0.02 [C1233]
component magnitude difference: (3.4)
rotation period: ?

--(7225) Huntress--discovery and notes:

Primary discovered 22 January 1983 by E. Bowell at the Anderson Mesa Station of the Lowell Observatory. Alternate designation 1983 BH.

Companion discovered by D. Pray, P. Pravec, P. Kusnirak, K. Hornoch, M. Husarik, M. Pikler, G. Cervak, S. Gajdos, F. Colas, and J. Lecacheux based on lightcurve observations from 7 December 2007 to 14 January 2008; reported 31 January 2008.

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:

© 2008, 2009 by Wm. Robert Johnston.
Last modified 13 January 2009.
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