Asteroids with Satellites Database--Johnston's Archive
(505476)
2013 UL15
compiled by Wm. Robert Johnston
last updated
21 December 2019
--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:
TNO, Cubewano
orbital data, primary (osculating elements)
[JPL]
: |
semimajor axis a: |
45.7361 AU
| |
orbital period P: |
309.3062 yr
(= 112976.3 d)
| |
eccentricity e: |
0.09907
| |
perihelion distance q: |
41.204 AU
| |
aphelion distance Q: |
50.2673 AU
| |
inclination i: |
2.02533°
| |
argument of perihelion ω: |
233.97°
| |
ascending node Ω: |
81.884°
| |
mean anomaly M: |
55.033°
| |
perihelion passage TP: |
1972 Jan 13.3
| |
Epoch: |
2019 Apr 27
| |
data arc: |
2013-2018
(60 obs.)
| |
Earth MOID: |
40.191 AU
| |
Jupiter Tisserand invariant TJ: |
6.01
|
| Neptune Tisserand invariant TN: | 3.11038539641155 [*D] |
orbital data, secondary:
|
semimajor axis as: |
5370
± 60 km
(separation)
[G19c]
| |
separation/primary radius as/rp: | 65 [*E] | |
separation/Hill radius as/rH: | 0.009 [*E] | |
orbital period Ps: |
59
d [*E]
| |
eccentricity es: |
?
| |
normalized ang. mom. αL: |
?
|
|
other data, system (combined):
|
absolute mag. H: |
6.6
[MPC]
6.9 ± 0.5 [G19c]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
212
km [*E]
| |
geometric albedo: |
(0.09
) [*A]
| |
color index U-B: |
?
| |
color index B-V: |
?
| |
taxonomic type: |
?
| |
mass m: |
?
| |
density ρ: |
(1
g/cm3) [*A]
| |
Hill radius rH: |
580000 km [*E]
|
other data, primary:
|
diameter dp: |
166
km [*E]
| |
rotation period RPp: |
?
| |
amplitude in mag., rotational ΔM: |
?
| |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
131
km [*E]
| |
diameter ratio ds/dp: |
0.79
[*D]
| |
component mag. difference ΔM: |
0.5
[G19c]
| |
rotation period RPs: |
?
| |
|
|
--
(505476) 2013 UL15
--discovery and notes:
Primary discovered
2013 Aug 02
from
Mauna Kea Observatory, Hawaii, USA
by
Outer Solar System Origins Survey.
Permanent number assigned 2017 Nov 04.
Companion discovered
2019 Oct 11
by Solar System Origins Legacy Survey (A. H. Parker et al.)
using
Hubble Space Telescope
observations from Hubble Space Telescope.
Announced
2019 Nov 05 [G19c].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
©
2019
by Wm. Robert Johnston.
Last modified
21 December 2019.
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