Asteroids with Satellites Database--Johnston's Archive

(762) Pulcova

compiled by Wm. Robert Johnston
last updated 21 September 2014

--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: 3.156222142 AU
orbital period P: 5.607374286 yr
(= 2048.093458 d)
eccentricity e: 0.102891933
perihelion distance q: 2.83147234 AU
aphelion distance Q: 3.480971941 AU
inclination i: 13.0890117°
argument of perihelion ω: 189.188587°
ascending node Ω: 305.764338°
mean anomaly M: 208.258441°
perihelion passage TP: 2016 Oct 02.2802
Epoch: 2014 May 23
data arc: 1916-2013 (1788 obs.)
Earth MOID: 1.84667 AU
Jupiter Tisserand invariant TJ: 3.158


orbital data, secondary:
binary dynamical type:L [P07f]
semimajor axis as: 703 ± 14 km [M08d]
separation/primary radius as/rp:9.9 [*D]
separation/Hill radius as/rH:0.027 [*D]
orbital period Ps: 4.438 ± 0.001 d [M08d]
eccentricity es: 0.03 ± 0.01 [M08d]
normalized ang. mom. αL: 0.52 [P07f]

other data, system (combined):
absolute mag. H: 8.28 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 143 km [*D]
geometric albedo: 0.043 ± 0.009 [M11b]
color index U-B: 0.345 [T95a]
color index B-V: 0.658 [T95a]
taxonomic type: F (Tholen) [JPL]
mass m: 1.4x1018 ± 1x1017 kg [M08d]
density ρ: 0.9 ± 0.1 g/cm3[M08d]
Hill radius rH: 26000 km [*D]

other data, primary:
diameter dp: 141.72 ± 1.54 km [M11b]
rotation period RPp: 5.839 ± 0.000 h [D01a]
amplitude in mag., rotational ΔM: ?
pole direction Β, λ: ? , ?


other data, secondary:
diameter ds: 19 ± 7 km [M08d]
diameter ratio ds/dp: 0.134 ± 0.049 [*D]
component mag. difference ΔM: 4.4 [* D]
rotation period RPs: ?

-- (762) Pulcova --discovery and notes:

Primary discovered 1913 Sep 03 from Sime´s, Crimea, Russia by G. N. Neujmin. Alternate designation(s): 1913 SQ, 1952 QM1. Permanent number assigned -.

Named - for Pulkovo, Russia.

Companion discovered 2000 Feb 22 using adaptive optics telescope observations. Announced 2000 Oct 24.

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


© 2001-2010, 2014 by Wm. Robert Johnston.
Last modified 21 September 2014.
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