Asteroids with Satellites Database--Johnston's Archive
(2883)
Barabashov
compiled by Wm. Robert Johnston
last updated
30 April 2022
--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 [M14c]
| |
geometric albedo: |
0.351
± 0.068
[M14c]
| |
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, 2022
by Wm. Robert Johnston.
Last modified
30 April 2022.
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