(6708) Bobbievaile

compiled by Wm. Robert Johnston
last updated 6 June 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: 2.4446600 AU
orbital period P: 3.82 y (=1,369.13 d)
eccentricity e: 0.1819001
perihelion distance q: 1.9999761 AU
aphelion distance Q: 2.8893439 AU
inclination i: 12.09150°
argument of perihelion omega: 193.58745°
ascending node OMEGA: 115.93691°
mean anomaly M: 295.76419°
perihelion passage TP: 2010-FEB-22.12
Epoch: 18 JUN 2009
data arc: 1979-2003 (261 obs.)

orbital data, secondary:
semimajor axis a: (16 km?)
semimajor axis/primary radius a/Rp: (4?)
orbital period P: 24.7 h [C1794]
eccentricity e: ?

other data, primary:
diameter: (8 km?)
absolute magnitude H: 12.81 ± 0.14 [C1794]
rotation period: 8.221 ± 0.002 h [C1794]
amplitude delta M: 0.08 [C1794]
color index B-V: ?
color index V-R: ?
color index R-I: ?
slope parameter G: 0.25 assumed [C1794]
geometric albedo: (0.16) assumed
mass: ?
density: ?
type: ?

other data, secondary:
diameter: (4.5 km?)
diameter ratio Ds/Dp: >0.57 [C1794]
component magnitude difference: (1.22)
rotation period: ?

--(6708) Bobbievaile--discovery and notes:

Primary discovered 4 January 1989 by R. H. McNaught at Siding Spring Observatory. Alternate designations 1989 AA5, 1979 PF, 1989 CM9, 1994 LB.

Companion discovered by D. Pray, W. Brookfield, K. Hornoch, P. Kusnirak, P. Pravec, V. Chiorny, Yu. Krugly, M. Husarik, M. Pikler, F. Marchis, B. Macomber, M. Kislak, J. Vilagi, and S. Gajdos based on lightcurve observations from 16 April-3 May 2009 from Carbuncle, Ondrejov, Kharkiv, Skalnate Pleso, Lick, and Modra observatories in the Ondrejov Observatory Photometric Survey for Asynchronous Binary Asteroids, announced 7 May 2009.

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

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:

© 2009 by Wm. Robert Johnston.
Last modified 6 June 2009.
Return to Home. Return to Astronomy and Space. Return to Asteroids with Satellites.