Asteroids with Satellites Database--Johnston's Archive

(5402) Kejosmith

compiled by Wm. Robert Johnston
last updated 22 October 2018

--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: 2.0460939332 AU
orbital period P: 2.92676836 yr
(= 1069.0223334 d)
eccentricity e: 0.136784364
perihelion distance q: 1.76622028 AU
aphelion distance Q: 2.3259675895 AU
inclination i: 16.7062045°
argument of perihelion ω: 133.405672°
ascending node Ω: 237.047259°
mean anomaly M: 50.344866°
perihelion passage TP: 2018 Nov 28.500595
Epoch: 2019 Apr 27
data arc: 1986-2018 (1187 obs.)
Earth MOID: 0.8028 AU
Jupiter Tisserand invariant TJ: 3.733


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

other data, system (combined):
absolute mag. H: 13.6 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 4.19 ± 0.23 km [M**]
geometric albedo: 0.4 ± 0.06 [M**]
color index U-B: ?
color index B-V: ?
taxonomic type: ?
mass m: ?
density ρ: (1.6 g/cm3) [*A]
Hill radius rH: 670 km [*E]

other data, primary:
diameter dp: 4.19 ± 0.23 km [M**]
rotation period RPp: ?
amplitude in mag., rotational ΔM: ?
pole direction Β, λ: ? , ?


other data, secondary:
diameter ds: ?
diameter ratio ds/dp: ?
component mag. difference ΔM: ?
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.

Named 1997 Apr 22 for Keith C. Smith and Joan Furlong [MPC029670].

Companion discovered 2018 Sep using lightcurve observations. Announced 2018 Oct 07.

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


© 2018, 2014 by Wm. Robert Johnston.
Last modified 22 October 2018.
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