Asteroids with Satellites Database--Johnston's Archive

(6384) Kervin

compiled by Wm. Robert Johnston
last updated 16 July 2017

--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, inner

orbital data, primary (osculating elements) [JPL] :
semimajor axis a: 1.9363941219 AU
orbital period P: yr
(= 984.2129165 d)
eccentricity e: 0.076898635
perihelion distance q: 1.78748806 AU
aphelion distance Q: 2.085300186 AU
inclination i: 26.2896633°
argument of perihelion ω: 265.736551°
ascending node Ω: 76.848863°
mean anomaly M: 317.108782°
perihelion passage TP: 2017 Dec 30.26136
Epoch: 2017 Sep 04
data arc: 1989-2017 (1039 obs.)
Earth MOID: 0.875039 AU
Jupiter Tisserand invariant TJ: 3.778

orbital data, secondary:
semimajor axis as: 6.1 km [*E]
separation/primary radius as/rp:3.4 [*E]
separation/Hill radius as/rH:0.012 [*E]
orbital period Ps: 0.6642 ± 0.0004 d [W16b]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 13.8 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 3.74 ± 0.77 km [M12b]
geometric albedo: 0.503 ± 0.21 [M12b]
color index U-B: ?
color index B-V: ?
taxonomic type: ?
mass m: ?
density ρ: (1.6 g/cm3) [*A]
Hill radius rH: 510 km [*E]

other data, primary:
diameter dp: 3.6 km [*D]
rotation period RPp: 3.6194 ± 0.0001 h [W16b]
amplitude in mag., rotational ΔM: 0.06 ± 0.01 [W16b]
amplitude in mag., mutual events ΔM:0.03 ±0.01 [W16b]
pole direction Β, λ: ? , ?

other data, secondary:
diameter ds: >1.1 km [*D]
diameter ratio ds/dp: >0.3 [W16b]
component mag. difference ΔM: 2.6 [*D]
rotation period RPs: ?

-- (6384) Kervin --discovery and notes:

Primary discovered 1989 Jan 03 from Palomar Observatory, California, USA by E. F. Helin. Alternate designation(s): 1989 AM, 1990 KS. Permanent number assigned 1995 May 14.

Named 1996 Apr 04 for Paul W. Kervin (?-) [MPC26931].

Companion discovered 2015 by B. D. Warner, A. A. Macias using lightcurve observations. Announced 2016 Mar [W16b].

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:

© 2017 by Wm. Robert Johnston.
Last modified 16 July 2017.
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