Asteroids with Satellites Database--Johnston's Archive

(57027) 2000 UB59

compiled by Wm. Robert Johnston
last updated 21 January 2020

--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, outer


orbital data, primary (osculating elements) [JPL] :
semimajor axis a: 3.94884445 AU
orbital period P: 7.847025068 yr
(= 2866.180037 d)
eccentricity e: 0.134508669
perihelion distance q: 3.41769064 AU
aphelion distance Q: 4.47999826 AU
inclination i: 3.3558402°
argument of perihelion ω: 150.909557°
ascending node Ω: 285.492244°
mean anomaly M: 93.174679°
perihelion passage TP: 2017 Apr 15.17943
Epoch: 2019 Apr 27
data arc: 1999-2019 (790 obs.)
Earth MOID: 2.43343 AU
Jupiter Tisserand invariant TJ: 3.041


orbital data, secondary:
semimajor axis as: 26 km [*E]
separation/primary radius as/rp:4.7 [*E]
separation/Hill radius as/rH:0.0088 [*E]
orbital period Ps: 1.075 d [S20a]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 13.5 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 11.12 ± 0.26 km [M**]
geometric albedo: 0.068 ± 0.014 [M**]
color index U-B: ?
color index B-V: ?
taxonomic type: ?
mass m: ?
density ρ: (1.6 g/cm3) [*A]
Hill radius rH: 3000 km [*E]

other data, primary:
diameter dp: 11.12 ± 0.26 km [M**]
rotation period RPp: 4.8 h [S20a]
amplitude in mag., rotational ΔM: 0.15 [S20a]
amplitude in mag., mutual events ΔM:0.12 [S20a]
pole direction Β, λ: ? , ?


other data, secondary:
diameter ds: ?
diameter ratio ds/dp: ?
component mag. difference ΔM: ?
rotation period RPs: ?

-- (57027) 2000 UB59 --discovery and notes:

Primary discovered 2000 Oct 25 from Socorro, New Mexico, USA by LINEAR Program. Linked to prediscovery observations from 1999 Sep 05. Permanent number assigned 2003 Mar 18.

Companion discovered 2018 May 18 by G. M. Szabo, C. Kiss, R. Szakats, A. Pal, L. Molnar, K. Sarneczky, J. Vinko, R. Szabo, G. Marton, and L. L. Kiss using lightcurve observations from Kepler Space Telescope. Announced 2020 Jan 21 [S20a].

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


© 2020 by Wm. Robert Johnston.
Last modified 21 January 2020.
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