(37424)
Asteroids with Satellites Database--Johnston's Archive
(37424) 2001 YA3
compiled by Wm. Robert Johnston
last updated 30 April 2022
--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:**2.561222743 AUorbital period **P:**4.099012349 yr (= 1497.1642603 d)eccentricity **e:**0.186362578perihelion distance **q:**2.083906669 AUaphelion distance **Q:**3.038538817 AUinclination **i:**12.69879171°argument of perihelion **ω:**62.5076229°ascending node **Ω:**339.0782184°mean anomaly **M:**4.7659059°perihelion passage **TP:2022 Jan 01.179600Epoch:2022 Jan 21data arc:1980-2021 (1751 obs.)Earth MOID:**1.12377 AUJupiter Tisserand invariant **TJ:**3.376 orbital data, secondary: semimajor axis **as:**11 km [*E]separation/primary radius **as/rp:**3.8 [*E]separation/Hill radius **as/rH:**0.010 [*E]orbital period **Ps:**0.7898 ± 0.0003 d [B21l]eccentricity es:?normalized ang. mom. αL:? | other data, system (combined): absolute mag. **H:**13.34 [MPC]slope parameter G: (0.15) [*A]effective diameter dE:5.93 ± 0.07 km [M11b]geometric albedo:0.349 ± 0.055 [M11b]color index U-B:?color index B-V:?taxonomic type:?mass m:?density ρ: (1.6 g/cm3) [*A]Hill radius **rH:**1200 km [*E] other data, primary: diameter **dp:**5.79 km [*D]rotation period **RPp:**2.8251 ± 0.0002 h [B21l]amplitude in mag., rotational **ΔM:**0.11 [B21l]amplitude in mag., mutual events **ΔM:**0.05 [B21l]pole direction Β, λ:? , ? other data, secondary: diameter **ds:**>1.27 km [*D]diameter ratio **ds/dp:**>0.22 [B21l]component mag. difference ΔM:<3.3 [*D]rotation period RPs:? |
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-- (37424) 2001 YA3 --discovery and notes:
Primary discovered 2001 Dec 19 from Fountain Hills, Arizona, USA by C. W. Juels. Alternate designation(s): 1980 RZ7, 1980 TR8, 1984 SJ2, 1999 JJ138. Linked to prediscovery observations from 1980 Sep 13. Permanent number assigned 2002 Feb 27.
Companion discovered 2021 Sep 26 by V. Benishek, P. Pravec, P. Sogorb, and R. Durkee using lightcurve observations from Sopot Observatory, Serbia; Bastidan Observatory, France; Shed of Science South Observatory, Pontotoc, Texas, USA. Announced 2021 Dec 09 [B21l].
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© 2021, 2022 by Wm. Robert Johnston.
Last modified 30 April 2022.
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