(10044)
Asteroids with Satellites Database--Johnston's Archive
(10044) Squyres
compiled by Wm. Robert Johnston
last updated 5 January 2023
--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:**2.5642002977 AUorbital period **P:**4.106162398 yr (= 1499.775816 d)eccentricity **e:**0.334715374perihelion distance **q:**1.705923035 AUaphelion distance **Q:**3.422477561 AUinclination **i:**16.4444912°argument of perihelion **ω:**32.6231865°ascending node **Ω:**317.9671764°mean anomaly **M:**45.0169032°perihelion passage **TP:2022 Aug 21.457603Epoch:2023 Feb 25data arc:1985-2022 (2091 obs.)Earth MOID:**0.716893 AUJupiter Tisserand invariant **TJ:**3.298 orbital data, secondary: semimajor axis **as:**8.3 km [*E]separation/primary radius **as/rp:**3.7 [*E]separation/Hill radius **as/rH:**0.014 [*E]orbital period **Ps:**0.7779 ± 0.0004 d [B23a]eccentricity es:?normalized ang. mom. αL:? | other data, system (combined): absolute mag. **H:**13.57 [MPC]slope parameter G: (0.15) [*A]effective diameter **dE:4.61 ± 0.21 km [M**]geometric albedo:**0.362 ± 0.062 [M**]color index U-B:?color index B-V:?color index J-H:1.354 [LMP] taxonomic type:?mass m:?density ρ: (1.6 g/cm3) [*A]Hill radius **rH:**590 km [*E] other data, primary: diameter **dp:**4.44 ± 0.20 km [*D]rotation period **RPp:**3.3356 ± 0.0005 h [B23a]amplitude in mag., rotational **ΔM:**0.1 [B23a]amplitude in mag., mutual events **ΔM:**0.12 ±0.04 [B23a]pole direction Β, λ:? , ? other data, secondary: diameter **ds:**>1.24 ± 0.057 km [*D]diameter ratio **ds/dp:**>0.28 [B23a]component mag. difference ΔM:<2.8 [*D]rotation period RPs:? |
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-- (10044) Squyres --discovery and notes:
Primary discovered 1985 Sep 15 from Palomar Observatory, California, USA by C. S. Shoemaker and E. M. Shoemaker. Alternate designation(s): 1985 RU, 1989 PD. Permanent number assigned 1999 Mar 02.
Named 2002 Sep 21 for Steven W. Squyres (1956-) [MPC046682].
Companion discovered 2022 Aug 12 by V. Benishek, P. Pravec, and R. Durkee using lightcurve observations from Sopot Observatory, Serbia; Shed of Science South Observatory, Pontotoc, Texas, USA. Announced 2023 Jan 04 [B23a].
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--Links to ADS abstracts:
© 2023 by Wm. Robert Johnston.
Last modified 5 January 2023.
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