(29606)
Asteroids with Satellites Database--Johnston's Archive
(29606) 1998 QN94
compiled by Wm. Robert Johnston
last updated 2 October 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:**2.3269778474 AUorbital period **P:**3.549740255 yr (= 1296.542628 d)eccentricity **e:**0.208891916perihelion distance **q:**1.840890986 AUaphelion distance **Q:**2.8130647091 AUinclination **i:**23.9009249°argument of perihelion **ω:**50.105595°ascending node **Ω:**155.0038944°mean anomaly **M:**26.3214617°perihelion passage **TP:2022 May 06.203064Epoch:2022 Aug 09data arc:1987-2022 (1869 obs.)Earth MOID:**0.9074 AUJupiter Tisserand invariant **TJ:**3.432 orbital data, secondary: semimajor axis **as:**6.1 km [*E]separation/primary radius **as/rp:**4.5 [*E]separation/Hill radius **as/rH:**0.012 [*E]orbital period **Ps:**0.8194 ± 0.0002 d [S22a]eccentricity es:?normalized ang. mom. αL:? | other data, system (combined): absolute mag. **H:**14.7 [MPC]slope parameter G: (0.15) [*A]effective diameter dE:2.8 ± 0.6 km [M**]geometric albedo:0.358 ± 0.205 [M**]color index U-B:?color index B-V:?taxonomic type:?mass m:?density ρ: (1.6 g/cm3) [*A]Hill radius **rH:**490 km [*E] other data, primary: diameter **dp:**2.69 km [*D]rotation period **RPp:**2.8965 ± 0.0001 h [S22a]amplitude in mag., rotational **ΔM:**0.17 ± 0.01 [S22a]pole direction Β, λ:? , ? other data, secondary: diameter **ds:**>0.78 km [*D]diameter ratio **ds/dp:**>0.29 [S22a]component mag. difference **ΔM:**2.7 [*D]rotation period **RPs:**19.666 ± 0.004 h [S22a] |
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-- (29606) 1998 QN94 --discovery and notes:
Primary discovered 1998 Aug 17 from Socorro, New Mexico, USA by LINEAR Program. Alternate designation(s): 2001 MK2. Linked to prediscovery observations from 1987 Jun 30. Permanent number assigned 2001 Oct 02.
Companion discovered 2022 May 02 by R. D. Stephens, D. R. Coley, B. D. Warner using lightcurve observations from Center for Solar System Studies, Landers, California, USA. Announced 2022 Sep 22 [S22a].
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© 2022 by Wm. Robert Johnston.
Last modified 2 October 2022.
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