Asteroids with Satellites Database--Johnston's Archive
(2847)
Parvati
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: |
2.1685660119 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 [M14c]
| |
geometric albedo: |
0.373
± 0.085
[M14c]
| |
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, 2022
by Wm. Robert Johnston.
Last modified
30 April 2022.
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