Asteroids with Satellites Database--Johnston's Archive
(2178)
Kazakhstania
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: |
2.2077361492 AU
| |
orbital period P: |
3.280354302 yr
(= 1198.1720377 d)
| |
eccentricity e: |
0.154730125
| |
perihelion distance q: |
1.86613286 AU
| |
aphelion distance Q: |
2.5493394385 AU
| |
inclination i: |
3.0738395°
| |
argument of perihelion ω: |
351.075694°
| |
ascending node Ω: |
11.415113°
| |
mean anomaly M: |
77.147783°
| |
perihelion passage TP: |
2018 Aug 13.232455
| |
Epoch: |
2019 Apr 27
| |
data arc: |
1949-2018
(1494 obs.)
| |
Earth MOID: |
0.86269 AU
| |
Jupiter Tisserand invariant TJ: |
3.642
|
orbital data, secondary:
|
semimajor axis as: |
8
km
[*E]
| |
separation/primary radius as/rp: | 3.8 [*E] | |
separation/Hill radius as/rH: | 0.011 [*E] | |
orbital period Ps: |
0.771
± 0.00025
d [B18i]
| |
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: |
4.31
± 0.07
km [M11b]
| |
geometric albedo: |
0.415
± 0.074
[M11b]
| |
color index U-B: |
?
| |
color index B-V: |
?
| |
taxonomic type: |
?
| |
mass m: |
?
| |
density ρ: |
(1.6
g/cm3) [*A]
| |
Hill radius rH: |
720 km [*E]
|
other data, primary:
|
diameter dp: |
4.17
km [*D]
| |
rotation period RPp: |
3.0183
± 0.0002
h [B18i]
| |
amplitude in mag., rotational ΔM: |
0.31
[B18i]
| |
amplitude in mag., mutual events ΔM: | 0.11 ±0.04 [B18i] | |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
1.08
km [*D]
| |
axial ratios a/b, b/c: | 1.3;? [B18i] | |
diameter ratio ds/dp: |
0.26
± 0.02
[B18i]
| |
component mag. difference ΔM: |
2.9
± 0.15
[*D]
| |
rotation period RPs: |
18.504
± 0.006
h [B18i]
| |
|
|
--
(2178) Kazakhstania
--discovery and notes:
Primary discovered
1972 Sep 11
from
Crimean Astrophysical Observatory, Ukraine, USSR
by
N. S. Chernykh.
Alternate designation(s):
1972 RA2,
1949 UC, 1975 QN, 1978 NA.
Linked to prediscovery observations from 1949 Oct 22.
Permanent number assigned 1979.
Named 1980 Apr 01 for the Kazakhstan S.S.R. [MPC005285].
Companion discovered
2018 Oct
by V. Benishek, P. Pravec, H. Kucakova, K. Hornoch, V. Chiorny, F. Pilcher, A. Aznar, and V. Casanova
using
lightcurve
observations from Sopot Observatory, Serbia; Ondrejov Observatory; Chuguev Station, Kharkiv Observatory, Ukraine; Organ Mesa Observatory; Sierra Nevada Observatory.
Announced
2018 Oct 18 [B18i].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
©
2018, 2022
by Wm. Robert Johnston.
Last modified
30 April 2022.
Return to Home. Return to Astronomy and Space. Return to Asteroids with Satellites.