Asteroids with Satellites Database--Johnston's Archive

(6708) Bobbievaile

compiled by Wm. Robert Johnston
last updated 21 September 2014

--Orbital and physical data--

(See this page for definitions of quantities; source codes in brackets, see this link for full references; *A, *D, and *E indicate assumed, derived, and estimated values, respectively.)

dynamical type, primary: main belt asteroid

orbital data, primary (osculating elements) [JPL] :
semimajor axis a: 2.444865529 AU
orbital period P: 3.822880022 yr
(= 1396.306928 d)
eccentricity e: 0.181908230
perihelion distance q: 2.00012437 AU
aphelion distance Q: 2.889606691 AU
inclination i: 12.0883610°
argument of perihelion ω: 193.168224°
ascending node Ω: 115.888023°
mean anomaly M: 40.311629°
perihelion passage TP: 2013 Dec 17.64609
Epoch: 2014 May 23
data arc: 1979-2013 (1147 obs.)
Earth MOID: 0.986071 AU
Jupiter Tisserand invariant TJ: 3.446

orbital data, secondary:
binary dynamical type:B [M09a]
semimajor axis as: 19 km [*E]
separation/primary radius as/rp:4.7 [*E]
separation/Hill radius as/rH:0.014 [*E]
orbital period Ps: 1.029 d [P09a]
eccentricity es: ?
normalized ang. mom. αL: 0.22 [M09a]

other data, system (combined):
absolute mag. H: 13 [MPC]
12.81 ± 0.14 [P09a]
slope parameter G: 0.25 [P09a]
effective diameter dE: 9.23 ± 0.02 km [M11b]
geometric albedo: 0.103 ± 0.02 [M11b]
color index U-B: ?
color index B-V: ?
taxonomic type: ?
mass m: ?
density ρ: (1.6 g/cm3) [*A]
Hill radius rH: 1300 km [*E]

other data, primary:
diameter dp: 8.02 ± 0.02 km [*D]
rotation period RPp: 8.221 ± 0.002 h [P09a]
amplitude in mag., rotational ΔM: 0.08 [P09a]
pole direction Β, λ: ? , ?

other data, secondary:
diameter ds: 4.57 km [*D]
diameter ratio ds/dp: >0.57 [P09a]
component mag. difference ΔM: <1.2 [*D]
rotation period RPs: ?

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

Primary discovered 1989 Jan 04 from Siding Spring Observatory, New South Wales, Australia by R. H. McNaught. Alternate designation(s): 1989 AA5, 1979 PF, 1989 CM9, 1994 LB. Linked to prediscovery observations from 1979 Aug 14. Permanent number assigned 1995 Dec 07.

Named 1997 Apr 22 for Roberta Vaile (1959-1996) [MPC29671].

Companion discovered 2009 Apr 16 by D. Pray, 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 using lightcurve observations from Carbuncle Observatory, W. Brookfield, Massachusetts, USA; Ondrejov Observatory, Czech Republic; Kharkiv Observatory, Ukraine; Skalnate Pleso Observatory; SETI Institute; University of California at Berkeley; Modra Observatory, Slovakia. Announced 2009 May 07 [P09a].

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:

© 2009, 2014 by Wm. Robert Johnston.
Last modified 21 September 2014.
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