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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