Asteroids with Satellites Database--Johnston's Archive

(5474) Gingasen

compiled by Wm. Robert Johnston
last updated 21 September 2014

--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: 2.382913175 AU
orbital period P: 3.678498048 yr
(= 1343.571412 d)
eccentricity e: 0.067449239
perihelion distance q: 2.22218750 AU
aphelion distance Q: 2.543638855 AU
inclination i: 6.1454103°
argument of perihelion ω: 256.942660°
ascending node Ω: 247.035884°
mean anomaly M: 257.340253°
perihelion passage TP: 2015 Jun 10.1408
Epoch: 2014 May 23
data arc: 1971-2013 (1123 obs.)
Earth MOID: 1.24441 AU
Jupiter Tisserand invariant TJ: 3.526


orbital data, secondary:
semimajor axis as: ?
orbital period Ps: ?
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 13 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 5.05 ± 0.48 km [M12b]
geometric albedo: 0.48 ± 0.109 [M12b]
color index U-B: ?
color index B-V: ?
taxonomic type: ?
mass m: ?
density ρ: (1.6 g/cm3) [*A]
Hill radius rH: 870 km [*E]

other data, primary:
diameter dp: 5.05 ± 0.48 km [M12b]
rotation period RPp: 3.6242 ± 0.0003 h [H08a]
amplitude in mag., rotational ΔM: 0.18 ± 0.02 [H08a]
pole direction Β, λ: ? , ?


other data, secondary:
diameter ds: ?
diameter ratio ds/dp: ?
component mag. difference ΔM: ?
rotation period RPs: 3.1095 ± 0.0009 h [H08a]

-- (5474) Gingasen --discovery and notes:

Primary discovered 1988 Dec 03 from Kitami, Hokkaido, Japan by T. Fujii and K. Watanabe. Alternate designation(s): 1988 XE1, 1955 YK, 1971 BO2. Linked to prediscovery observations from 1971 Jan 27. Permanent number assigned 1993 Mar 08.

Named 1996 Apr 04 for a railroad in Hokkaido, Japan [MPC26930].

Companion discovered 2008 Mar 07 using lightcurve observations. Announced 2008 Oct .

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


© 2011, 2014 by Wm. Robert Johnston.
Last modified 21 September 2014.
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