(5402)
Asteroids with Satellites Database--Johnston's Archive
(5402) Kejosmith
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:**2.0462824583 AUorbital period **P:**2.9272281585 yr (= 1069.1700849 d)eccentricity **e:**0.136975954perihelion distance **q:**1.765990966 AUaphelion distance **Q:**2.3265739507 AUinclination **i:**16.70276514°argument of perihelion **ω:**133.2097502°ascending node **Ω:**237.0283004°mean anomaly **M:**318.6497615°perihelion passage **TP:2021 Oct 31.806772Epoch:2021 Jul 01data arc:1986-2021 (2468 obs.)Earth MOID:**0.802777 AUJupiter Tisserand invariant **TJ:**3.733 orbital data, secondary: semimajor axis **as:**12 km [*E]separation/primary radius **as/rp:**5.8 [*E]separation/Hill radius **as/rH:**0.018 [*E]orbital period **Ps:**1.526 d [B18k]eccentricity es:?normalized ang. mom. αL:? | other data, system (combined): absolute mag. **H:**13.69 [MPC]slope parameter G: (0.15) [*A]effective diameter dE:4.19 ± 0.23 km [M12b]geometric albedo:0.400 ± 0.060 [M12b]color index U-B:?color index B-V:?taxonomic type:?mass m:?density ρ: (1.6 g/cm3) [*A]Hill radius **rH:**660 km [*E] other data, primary: diameter **dp:**4.12 km [*D]rotation period **RPp:**2.69549 ± 0.00009 h [B18k]amplitude in mag., rotational **ΔM:**0.13 [B18k]amplitude in mag., mutual events **ΔM:**0.05 ±0.02 [B18k]pole direction Β, λ:? , ? other data, secondary: diameter **ds:**>0.74 km [*D]diameter ratio **ds/dp:**>0.18 [B18k]component mag. difference ΔM:<3.72 [*D]rotation period RPs:? |
|---|
-- (5402) Kejosmith --discovery and notes:
Primary discovered 1989 Oct 27 from Palomar Observatory, California, USA by E. F. Helin. Alternate designation(s): 1989 UK2, 1986 SX, 1986 WO5. Linked to prediscovery observations from 1986 Sep 30. Permanent number assigned 1992 Dec 09.
Named 1997 Apr 22 for Keith C. Smith and Joan Furlong [MPC029670].
Companion discovered 2018 Aug 04 by V. Benishek, P. Pravec, H. Kucakova, K. Hornoch, B. Warner, J. Oey, F. Pilcher, and V. Chiorny using lightcurve observations from Sopot Observatory, Serbia; Ondrejov Observatory, Czech Republic; CS3 Palmer Divide Station, Eaton, Colorado, USA; Blue Mountains Observatory, Leura, New South Wales, Australia; Organ Mesa Observatory, Las Cruces, New Mexico, USA; Kharkiv Observatory, Chuguev, Ukraine. Announced 2018 Oct 07 [B18k].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
© 2018-2021, 2022 by Wm. Robert Johnston.
Last modified 30 April 2022.
Return to Home. Return to Astronomy and Space. Return to Asteroids with Satellites.