Asteroids with Satellites Database--Johnston's Archive
(152830)
Dinkinesh
compiled by Wm. Robert Johnston
last updated
5 November 2023
--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: |
2.1915426502 AU
| |
orbital period P: |
3.244390289 yr
(= 1185.0135529 d)
| |
eccentricity e: |
0.112106551
| |
perihelion distance q: |
1.945856362 AU
| |
aphelion distance Q: |
2.4372289382 AU
| |
inclination i: |
2.093589°
| |
argument of perihelion ω: |
66.765527°
| |
ascending node Ω: |
21.382258°
| |
mean anomaly M: |
85.944718°
| |
perihelion passage TP: |
2022 Dec 04.095401
| |
Epoch: |
2023 Sep 13
| |
data arc: |
1999-2023
(690 obs.)
| |
Earth MOID: |
0.962075 AU
| |
Jupiter Tisserand invariant TJ: |
3.663
|
orbital data, secondary:
|
semimajor axis as: |
?
| |
orbital period Ps: |
?
| |
eccentricity es: |
?
| |
normalized ang. mom. αL: |
?
|
|
other data, system (combined):
|
absolute mag. H: |
17.4
[MPC]
17.63 ± 0.04 [B23s]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
0.82
km [K23a]
| |
geometric albedo: |
0.28
[*D]
| |
color index U-B: |
?
| |
color index B-V: |
?
| |
color index V-R: | 0.455 ± 0.025 [M23a] | |
taxonomic type: |
S/Sq (SMASSII) [B23s]
| |
mass m: |
?
| |
density ρ: |
(1.6
g/cm3) [*A]
| |
Hill radius rH: |
140 km [*E]
|
other data, primary:
|
diameter dp: |
0.79
km [K23a]
| |
axial ratios a/b, b/c: | 1.43, ? [M23a] | |
rotation period RPp: |
52.67
± 0.04
h [M23a]
| |
amplitude in mag., rotational ΔM: |
0.39
± 0.02
[M23a]
| |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
0.22
km [K23a]
| |
diameter ratio ds/dp: |
0.28 [*D]
| |
component mag. difference ΔM: |
2.8 [*D]
| |
rotation period RPs: |
?
| |
|
|
--
(152830) Dinkinesh
--discovery and notes:
Primary discovered
1999 Nov 04
from
Socorro, New Mexico, USA
by
LINEAR Program.
Alternate designation(s):
1999 VD57,
2004 HJ78, 2007 CB63.
Linked to prediscovery observations from 1999 Oct 15.
Permanent number assigned 2007 Apr 02.
Named 2023 Feb 06 for the Ethiopian name for the “Lucy” Australopithecus afarensis fossil [WGSBN0302].
Companion discovered
2023 Nov 01
using
observations from Lucy spacecraft.
Announced
2023 Nov 02 [K23a].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
©
2023
by Wm. Robert Johnston.
Last modified
5 November 2023.
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