Asteroids with Satellites Database--Johnston's Archive

(2847) Parvati

compiled by Wm. Robert Johnston
last updated 17 Dec 2021

--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: 2.1685660119 AU
orbital period P: 3.1935018524 yr
(= 1166.4265516 d)
eccentricity e: 0.116407913
perihelion distance q: 1.916127768 AU
aphelion distance Q: 2.4210042558 AU
inclination i: 2.45330512°
argument of perihelion ω: 12.2353275°
ascending node Ω: 246.8849319°
mean anomaly M: 144.5405151°
perihelion passage TP: 2020 Oct 09.678071
Epoch: 2022 Jan 21
data arc: 1941-2021 (3344 obs.)
Earth MOID: 0.902027 AU
Jupiter Tisserand invariant TJ: 3.681


orbital data, secondary:
semimajor axis as: 15 km [*E]
separation/primary radius as/rp:4.5 [*E]
separation/Hill radius as/rH:0.013 [*E]
orbital period Ps: 0.9902 ± 0.0003 d [B21k]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 12.76 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 6.88 ± 0.06 km [M**]
geometric albedo: 0.373 ± 0.085 [M**]
color index U-B: ?
color index B-V: ?
taxonomic type: ?
mass m: ?
density ρ: (1.6 g/cm3) [*A]
Hill radius rH: 1100 km [*E]

other data, primary:
diameter dp: 6.69 ± 0.06 km [*D]
rotation period RPp: 2.6358 ± 0.0002 h [B21k]
amplitude in mag., rotational ΔM: 0.09 [B21k]
amplitude in mag., mutual events ΔM:0.09 ±0.03 [B21k]
pole direction Β, λ: ? , ?


other data, secondary:
diameter ds: 1.61 ± 0.13 km [*D]
axial ratios a/b, b/c:1.5;? [B21k]
diameter ratio ds/dp: 0.24 ± 0.02 [B21k]
component mag. difference ΔM: 3.10 ± 0.18 [*D]
rotation period RPs: 23.764 ± 0.007 h [B21k]

-- (2847) Parvati --discovery and notes:

Primary discovered 1959 Feb 01 from Flagstaff, Arizona, USA by Lowell Observatory. Alternate designation(s): 1959 CC1, 1931 OE, 1940 EA, 1941 SE, 1941 SV, 1960 SF, 1969 KG, 1973 SR2, 1975 BY, 1975 EN, 1979 QZ6. Linked to prediscovery observations from 1931. Permanent number assigned 1983.

Named 1993 Nov 29.

Companion discovered 2021 Sep 03 by V. Benishek, P. Pravec, B. Warner, R. Durkee, R. Goncalves, and F. Pilcher using lightcurve observations from Sopot Observatory, Serbia; Center for Solar System Studies, Landers, California, USA; Shed of Science South Observatory, Pontotoc, Texas, USA; Linhaceira Observatory; Organ Mesa Observatory, Las Cruces, New Mexico, USA. Announced 2021 Dec 10 [B21k].

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


© 2021 by Wm. Robert Johnston.
Last modified 17 Dec 2021.
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