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:
- Reiss, A. E., Marchis, F., & Emery, J. P. 2009, AGU Fall Meeting Abstracts Visible-Wavelength Integrated Spectroscopy of Binary Asteroids
- Pray, D., Brookfield, W., Hornoch, K., Kusnirak, P., Pravec, P., Chiorny, V., Krugly, Yu., Husarik, M., Pikler, M., Marchis, F., Macomber, B., Kislak, M., Vilagi, J., & Gajdos, S. 2009, Central Bureau Electronic Telegrams (6708) Bobbievaile
©
2009, 2014
by Wm. Robert Johnston.
Last modified
21 September 2014.
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