(8116) Jeanperrin

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: 2.2497454 AU
orbital period P: 3.37 y (=1,232.53 d)
eccentricity e: 0.1582899
perihelion distance q: 1.8936334 AU
aphelion distance Q: 2.6058574 AU
inclination i: 5.43082°
argument of perihelion omega: 320.58908°
ascending node OMEGA: 49.07012°
mean anomaly M: 7.18652°
perihelion passage TP: 2007-10-02.40
Epoch: 27 OCT 2007
data arc: 1987-2003 (251 obs.)

orbital data, secondary:
semimajor axis a: (18 km?)
semimajor axis/primary radius a/Rp: (6?)
orbital period P: 36.15 ± 0.02 h [C1127]
eccentricity e: ?

other data, primary:
diameter: (6 km?)
absolute magnitude H: 13.8 [JPL]
13.52 ± 0.13 [C1127]
rotation period: 3.6169 ± 0.0002 h [C1127]
amplitude delta M: 0.09 ± 0.02 [HHa]
color index B-V: ?
color index V-R: ?
color index R-I: ?
slope parameter G: (0.15) assumed
geometric albedo: (0.16) assumed
mass: ?
density: ?
type: ?

other data, secondary:
diameter: (2 km?)
diameter ratio Ds/Dp: >=0.33 [C1127]
component magnitude difference: (2.4)
rotation period: ?

--(8116) Jeanperrin--discovery and notes:

Primary discovered 17 April 1996 by E. W. Elst at the European Southern Observatory, subsequently linked to observations from 1987. Alternate designations 1987 WU3, 1990 RS11.

Secondary identified by D. Higgins, P. Pravec, P. Kusnirak, K. Hornoch, M. Husarik, M. Pikler, G. Cervak, D. Pray, S. Gajdos, Yu. Krugly, A. Marshalkina, R. Stephens, F. Colas, W. Cooney, J. Gross, and D. Terrell based on lightcurve observations from 4 October 2007 to 7 November 2007; announced 9 November 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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