Asteroids with Satellites Database--Johnston's Archive
(518678)
2008 UZ94
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:
NEA, Apollo
(PHA)
orbital data, primary (osculating elements)
[JPL]
: |
semimajor axis a: |
2.1916334212 AU
| |
orbital period P: |
3.244591859 yr
(= 1185.0871764 d)
| |
eccentricity e: |
0.572233845
| |
perihelion distance q: |
0.937506602 AU
| |
aphelion distance Q: |
3.4457602404 AU
| |
inclination i: |
30.238719°
| |
argument of perihelion ω: |
159.663004°
| |
ascending node Ω: |
248.241566°
| |
mean anomaly M: |
19.2647793°
| |
perihelion passage TP: |
2021 Nov 18.582103
| |
Epoch: |
2022 Jan 21
| |
data arc: |
2008-2021
(342 obs.)
| |
Earth MOID: |
0.0255465 AU
| |
Jupiter Tisserand invariant TJ: |
3.294
|
orbital data, secondary:
|
semimajor axis as: |
?
| |
orbital period Ps: |
?
| |
eccentricity es: |
?
| |
normalized ang. mom. αL: |
?
|
|
other data, system (combined):
|
absolute mag. H: |
17.39
[MPC]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
0.96
± 0.3
km [*21a]
| |
geometric albedo: |
0.21
[*D]
| |
color index U-B: |
?
| |
color index B-V: |
?
| |
taxonomic type: |
?
| |
mass m: |
?
| |
density ρ: |
(1
g/cm3) [*A]
| |
Hill radius rH: |
140 km [*E]
|
other data, primary:
|
diameter dp: |
0.96
± 0.3
km [B21m]
| |
rotation period RPp: |
4.8
h [B21m]
| |
amplitude in mag., rotational ΔM: |
?
| |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
?
| |
diameter ratio ds/dp: |
?
| |
component mag. difference ΔM: |
?
| |
rotation period RPs: |
?
| |
|
|
--
(518678) 2008 UZ94
--discovery and notes:
Primary discovered
2008 Oct 28
from
Socorro, New Mexico, USA
by
LINEAR Program.
Permanent number assigned 2018 May 29.
Companion discovered
2021 Dec
using
radar
observations from Goldstone Observatory, California, USA. [B21m]
Announced
2021 Dec.
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
©
2021
by Wm. Robert Johnston.
Last modified
17 Dec 2021.
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