(6615) Plutarchos

compiled by Wm. Robert Johnston
last updated 28 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: 2.1698708 AU
orbital period P: 3.20 y (=1,167.48 d)
eccentricity e: 0.1271947
perihelion distance q: 1.8938747 AU
aphelion distance Q: 2.4458669 AU
inclination i: 1.79589°
argument of perihelion omega: 80.99177°
ascending node OMEGA: 129.42079°
mean anomaly M: 43.35488°
perihelion passage TP: 2007-06-08.40
Epoch: 27 OCT 2007
data arc: 1960-2004 (233 obs.)

orbital data, secondary:
semimajor axis a: (14 km?)
semimajor axis/primary radius a/Rp: (6?)
orbital period P: 40.02 ± 0.1 h [O07a]
eccentricity e: ?

other data, primary:
diameter: (4.5 km?)
absolute magnitude H: 14.0 [JPL]
rotation period: 2.3247 ± 0.0001 h [O07a]
amplitude delta M: 0.06 ± 0.01; 0.07 [O07a]
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: ?

other data, secondary:
diameter: ?
diameter ratio Ds/Dp: ?
component magnitude difference: ?
rotation period: ?

--(6615) Plutarchos--discovery and notes:

Primary discovered 17 October 1960 by C. J. van Houten, I. van Houten-Groeneveld, and T. Gehrels at Palomar Observatory, California, USA. Alternate designations 9512 P-L, 1991 EW.

Secondary identified by Julian Oey, Donald P. Pray, and Petr Pravec based on lightcurve observations from 14-21 April 2007.

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

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:

© 2007, 2008 by Wm. Robert Johnston.
Last modified 28 November 2008.
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