Asteroids with Satellites Database--Johnston's Archive
(7225)
Huntress
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: |
2.340644707 AU
| |
orbital period P: |
3.581058752 yr
(= 1307.981709 d)
| |
eccentricity e: |
0.203256012
| |
perihelion distance q: |
1.86489460 AU
| |
aphelion distance Q: |
2.816394817 AU
| |
inclination i: |
6.8716157°
| |
argument of perihelion ω: |
203.618323°
| |
ascending node Ω: |
275.762402°
| |
mean anomaly M: |
271.940960°
| |
perihelion passage TP: |
2015 Apr 07.94337
| |
Epoch: |
2014 May 23
| |
data arc: |
1960-2013
(893 obs.)
| |
Earth MOID: |
0.883131 AU
| |
Jupiter Tisserand invariant TJ: |
3.527
|
orbital data, secondary:
|
semimajor axis as: |
10
km
[*E]
| |
separation/primary radius as/rp: | 3.1 [*E] | |
separation/Hill radius as/rH: | 0.011 [*E] | |
orbital period Ps: |
0.6113
± 0.0004
d [P08c]
| |
eccentricity es: |
?
| |
normalized ang. mom. αL: |
?
|
|
other data, system (combined):
|
absolute mag. H: |
13
[MPC]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
6.68
± 0.22
km [M11b]
| |
geometric albedo: |
0.165
± 0.016
[M11b]
| |
color index U-B: |
?
| |
color index B-V: |
?
| |
taxonomic type: |
S (SMASSII) [JPL]
| |
mass m: |
?
| |
density ρ: |
(1.6
g/cm3) [*A]
| |
Hill radius rH: |
950 km [*E]
|
other data, primary:
|
diameter dp: |
6.54
± 0.22
km [*D]
| |
rotation period RPp: |
2.4400
± 0.0001
h [P08c]
| |
amplitude in mag., rotational ΔM: |
0.11
[P08c]
| |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
1.37
± 0.14
km [*D]
| |
diameter ratio ds/dp: |
0.21
± 0.02
[P08c]
| |
component mag. difference ΔM: |
3.4
± 0.2
[*D]
| |
rotation period RPs: |
?
| |
|
|
--
(7225) Huntress
--discovery and notes:
Primary discovered
1983 Jan 22
from
Anderson Mesa Station, Arizona, USA
by
E. Bowell.
Alternate designation(s):
1983 BH,
1989 XJ.
Linked to prediscovery observations from 1960 Oct 26.
Permanent number assigned 1996 Oct 26.
Named 1998 Aug 08 for Wesley T. Huntress Jr. (1942-) [MPC32348].
Companion discovered
2007 Dec 07
by D. Pray, P. Pravec, P. Kusnirak, K. Hornoch, M. Husarik, M. Pikler, G. Cervak, S. Gajdos, F. Colas, and J. Lecacheux
using
lightcurve
observations from Carbuncle Hill Observatory, Greene, Rhode Island, USA; Ondrejov Observatory, Czech Republic; Skalnate Pleso Observatory; Modra Observatory, Slovakia; IMCCE and Pic du Midi Observatory.
Announced
2008 Jan 31 [P08c].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Pray, D., Pravec, P., Kusnirak, P., Hornoch, K., Husarik, M., Pikler, M., Cervak, G., Gajdos, S., Colas, F., & Lecacheux, J. 2008, Central Bureau Electronic Telegrams (7225) Huntress
- Bus, S. & Binzel, R. P. 2004, NASA Planetary Data System 7225 Huntress CCD Spectrum
©
2008-2009, 2014
by Wm. Robert Johnston.
Last modified
21 September 2014.
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