Asteroids with Satellites Database--Johnston's Archive

(2883) Barabashov

compiled by Wm. Robert Johnston
last updated 7 February 2020

--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: 2.2457649694 AU
orbital period P: yr
(= 1229.2632033 d)
eccentricity e: 0.081451481
perihelion distance q: 2.062844087 AU
aphelion distance Q: 2.4286858514 AU
inclination i: 1.406951°
argument of perihelion ω: 151.02705°
ascending node Ω: 48.49949°
mean anomaly M: 318.566008°
perihelion passage TP: 2020 Oct 19.481339
Epoch: 2020 May 31
data arc: 1950-2020 (2536 obs.)
Earth MOID: 1.06013 AU
Jupiter Tisserand invariant TJ: 3.626


orbital data, secondary:
semimajor axis as: 16 km [*E]
separation/primary radius as/rp:6.7 [*E]
separation/Hill radius as/rH:0.021 [*E]
orbital period Ps: 1.7967 ± 0.0004 d [D20a]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 13.2 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 4.91 ± 0.05 km [M**]
geometric albedo: 0.351 ± 0.068 [M**]
color index U-B: ?
color index B-V: ?
taxonomic type: ?
mass m: ?
density ρ: (1.6 g/cm3) [*A]
Hill radius rH: 770 km [*E]

other data, primary:
diameter dp: 4.76 ± 0.06 km [*D]
rotation period RPp: 2.6839 ± 0.0002 h [D20a]
amplitude in mag., rotational ΔM: 0.08 [D20a]
amplitude in mag., mutual events ΔM:0.07 ±0.01 [D20a]
pole direction Β, λ: ? , ?


other data, secondary:
diameter ds: 1.19 ± 0.1 km [*D]
diameter ratio ds/dp: 0.25 ± 0.02 [D20a]
component mag. difference ΔM: 3.01 ± 0.17 [*D]
rotation period RPs: ?

-- (2883) Barabashov --discovery and notes:

Primary discovered 1978 Sep 13 from Nauchnyj by N. Chernykh. Alternate designation(s): 1978 RG6, 1940 LJ, 1950 JW, 1950 LL, 1975 WA2, 1980 DU4, 1981 QV1, 1983 AV2. Linked to prediscovery observations from 1940 Jun. Permanent number assigned 1983 May 26.

Named 1984 Nov 08 for Nikolaj Pavlovich Barabashov (1894-1971) [MPC009216].

Companion discovered 2019 Dec 17 by R. Durkee, P. Pravec, H. Kucakova, and K. Hornoch using lightcurve observations from Shed of Science South Observatory, Pontotoc, Texas, USA; Ondrejov Observatory. Announced 2020 Feb 05 [D20a].

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


© 2020 by Wm. Robert Johnston.
Last modified 7 February 2020.
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