Asteroids with Satellites Database--Johnston's Archive

(6764) Kirillavrov

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: 2.2594076665 AU
orbital period P: 3.396253503 yr
(= 1240.4815918 d)
eccentricity e: 0.139105602
perihelion distance q: 1.945111403 AU
aphelion distance Q: 2.5737039296 AU
inclination i: 7.04728349°
argument of perihelion ω: 242.718733°
ascending node Ω: 18.1089392°
mean anomaly M: 47.2691409°
perihelion passage TP: 2021 Aug 11.120836
Epoch: 2022 Jan 21
data arc: 1971-2021 (3895 obs.)
Earth MOID: 0.943285 AU
Jupiter Tisserand invariant TJ: 3.598


orbital data, secondary:
semimajor axis as: 14 km [*E]
separation/primary radius as/rp:5.3 [*E]
separation/Hill radius as/rH:0.017 [*E]
orbital period Ps: 1.2671 ± 0.0004 d [P22b]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 13.26 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 5.29 ± 0.09 km [M11b]
geometric albedo: 0.399 ± 0.046 [M11b]
color index U-B: ?
color index B-V: ?
taxonomic type: ?
mass m: ?
density ρ: (1.6 g/cm3) [*A]
Hill radius rH: 800 km [*E]

other data, primary:
diameter dp: 5.29 ± 0.09 km [M11b]
rotation period RPp: 4.739 ± 0.001 h [P22b]
amplitude in mag., rotational ΔM: 0.08 ± 0.03 [P22b]
amplitude in mag., mutual events ΔM:0.25 ±0.06 [P22b]
pole direction Β, λ: ? , ?


other data, secondary:
diameter ds: ?
diameter ratio ds/dp: ?
component mag. difference ΔM: ?
rotation period RPs: ?

-- (6764) Kirillavrov --discovery and notes:

Primary discovered 1981 Oct 07 from Crimean Astrophysical Observatory, Ukraine, USSR by L. I. Chernykh. Alternate designation(s): 1981 TM3, 1971 TV1, 1980 FE10, 1991 RO. Linked to prediscovery observations from 1971 Oct 12. Permanent number assigned 1996 Jan 05.

Named 2000 Jan 24 for Kirill Yur'evich Lavrov (1925-2007) [MPC038195].

Companion discovered 2021 Apr 13 by T. Polakis, J. Oey, and M. Colazo using lightcurve observations from Blue Mountains Observatory, Leura, New South Wales, Australia; Argentina. Announced 2022 Apr [P22b].

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


© 2022 by Wm. Robert Johnston.
Last modified 30 April 2022.
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