(5481)

Kiuchi (original) (raw)

Asteroids with Satellites Database--Johnston's Archive

(5481) Kiuchi

compiled by Wm. Robert Johnston
last updated 29 May 2019

--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:**2.339257265 AUorbital period **P:**3.577875156 yr (= 1306.818901 d)eccentricity **e:**0.063265229perihelion distance **q:**2.191263619 AUaphelion distance **Q:**2.48725091 AUinclination **i:**5.957471248°argument of perihelion **ω:**250.4951681°ascending node **Ω:**326.1140064°mean anomaly **M:**224.0542347°perihelion passage **TP:2015 Sep 28.4902Epoch:2014 May 23data arc:1970-2014 (1074 obs.)Earth MOID:**1.19345 AUJupiter Tisserand invariant **TJ:3.555 orbital data, secondary: binary dynamical type:**A [L15a]semimajor axis **as:**14 km [*E]separation/primary radius **as/rp:**4.1 [*E]separation/Hill radius **as/rH:**0.012 [*E]orbital period **Ps:**0.8708 ± 0.0004 d [K08b]eccentricity es:<0.18 [P16d]normalized ang. mom. αL:? other data, system (combined): absolute mag. H:13.2 [MPC]12.98 ± 0.1 [K08b]slope parameter G: (0.15) [*A]effective diameter dE:7.22 km [*E]geometric albedo: (0.16 ) [*A]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:**6.86 km [*E]rotation period **RPp:**3.6196 ± 0.0002 h [K08b]amplitude in mag., rotational **ΔM:**0.1 [K08b]pole direction Β, λ:? , ? other data, secondary: diameter **ds:**2.26 km [*E]diameter ratio **ds/dp:**0.33 ± 0.02 [K08b]component mag. difference **ΔM:**2.41 ± 0.13 [*D]rotation period RPs:?

-- (5481) Kiuchi --discovery and notes:

Primary discovered 1990 Feb 15 from Kitami, Hokkaido, Japan by K. Endate and K. Watanabe. Alternate designation(s): 1990 CH, 1970 SR. Linked to prediscovery observations from 1970 Sep 27. Permanent number assigned 1993 Mar 08.

Named 1993 Sep 01 for Tsuruhiko Kiuchi (1954-) [MPC022510].

Companion discovered 2008 Mar 13 by P. Kusnirak, P. Pravec, J. Oey, R. Stephens, M. Husarik, and J. Ries using lightcurve observations from Ondrejov Observatory, Czech Republic; Leura, New South Wales, Australia; Goat Mountain Astronomical Research Station, Yucca Valley, California, USA; Skalnate Pleso Observatory; McDonald Observatory, Texas, USA. Announced 2008 Apr 16 [K08b].

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© 2008-2014, 2019 by Wm. Robert Johnston.
Last modified 29 May 2019.
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