Asteroids with Satellites Database--Johnston's Archive
(18527)
1996 VJ30
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: |
2.3991578652 AU
| |
orbital period P: |
3.71610724 yr
(= 1357.3338042 d)
| |
eccentricity e: |
0.143552493
| |
perihelion distance q: |
2.054752773 AU
| |
aphelion distance Q: |
2.743562957 AU
| |
inclination i: |
5.4545662°
| |
argument of perihelion ω: |
104.780076°
| |
ascending node Ω: |
243.4416°
| |
mean anomaly M: |
69.026484°
| |
perihelion passage TP: |
2018 Aug 09.744500
| |
Epoch: |
2019 Apr 27
| |
data arc: |
1951-2018
(1602 obs.)
| |
Earth MOID: |
1.05575 AU
| |
Jupiter Tisserand invariant TJ: |
3.507
|
orbital data, secondary:
|
semimajor axis as: |
6
km
[*E]
| |
separation/primary radius as/rp: | 3.8 [*E] | |
separation/Hill radius as/rH: | 0.010 [*E] | |
orbital period Ps: |
0.7946
± 0.0004
d [B18h]
| |
eccentricity es: |
?
| |
normalized ang. mom. αL: |
?
|
|
other data, system (combined):
|
absolute mag. H: |
13.9
[MPC]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
3.35
± 0.48
km [M11b]
| |
geometric albedo: |
0.572
± 0.147
[M11b]
| |
color index U-B: |
?
| |
color index B-V: |
?
| |
taxonomic type: |
?
| |
mass m: |
?
| |
density ρ: |
(1.6
g/cm3) [*A]
| |
Hill radius rH: |
600 km [*E]
|
other data, primary:
|
diameter dp: |
3.19
km [*D]
| |
rotation period RPp: |
3.3529
± 0.00009
h [B18h]
| |
amplitude in mag., rotational ΔM: |
0.13
[B18h]
| |
amplitude in mag., mutual events ΔM: | 0.155 ±0.055 [B18h] | |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
1.02
km [*D]
| |
axial ratios a/b, b/c: | 1.4;? [B18h] | |
diameter ratio ds/dp: |
0.32
± 0.02
[B18h]
| |
component mag. difference ΔM: |
2.5
± 0.2
[*D]
| |
rotation period RPs: |
3.3529
± 0.00009
h [B18h]
| |
|
|
--
(18527) 1996 VJ30
--discovery and notes:
Primary discovered
1996 Nov 07
from
Kushiro, Hokkaido, Japan
by
S. Ueda and H. Kaneda.
Alternate designation(s):
1992 SV26.
Linked to prediscovery observations from 1951 Aug 10.
Permanent number assigned 2000 Nov 11.
Companion discovered
2018 Sep 16
by V. Benishek, P. Pravec, K. Hornoch, P. Kusnirak, J. Oey, R. Groom, V. Chiorny, and N. Gartonyuk
using
lightcurve
observations from Sopot Observatory, Serbia; Ondrejov Observatory, Czech Republic; Blue Mountains Observatory, Leura, New South Wales, Australia; Darling Range Observatory, Perth, Western Australia; Kharkiv Observatory, Chuguev, Ukraine; Crimean Astrophysical Observatory.
Announced
2018 Oct 14 [B18h].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
©
2018, 2022
by Wm. Robert Johnston.
Last modified
30 April 2022.
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