Asteroids with Satellites Database--Johnston's Archive

(2178) Kazakhstania

compiled by Wm. Robert Johnston
last updated 30 December 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: 2.2077361492 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 [M**]
geometric albedo: 0.415 ± 0.074 [M**]
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 by Wm. Robert Johnston.
Last modified 30 December 2018.
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