Asteroids with Satellites Database--Johnston's Archive

(57027) 2000 UB59

compiled by Wm. Robert Johnston
last updated 30 April 2022

--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: 3.949687423 AU
orbital period P: 7.84968615 yr
(= 2867.097866 d)
eccentricity e: 0.133796384
perihelion distance q: 3.42123353 AU
aphelion distance Q: 4.478141318 AU
inclination i: 3.3555083°
argument of perihelion ω: 150.610432°
ascending node Ω: 285.495074°
mean anomaly M: 193.56251°
perihelion passage TP: 2025 Feb 15.53492
Epoch: 2021 Jul 01
data arc: 1999-2021 (867 obs.)
Earth MOID: 2.43695 AU
Jupiter Tisserand invariant TJ: 3.041

orbital data, secondary:
semimajor axis as: 25 km [*E]
separation/primary radius as/rp:4.7 [*E]
separation/Hill radius as/rH:0.0087 [*E]
orbital period Ps: 1.075 d [S20a]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 13.53 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 11.12 ± 0.26 km [G12c]
geometric albedo: 0.068 ± 0.014 [G12c]
color index U-B: ?
color index B-V: ?
taxonomic type: ?
mass m: ?
density ρ: (1.6 g/cm3) [*A]
Hill radius rH: 2900 km [*E]

other data, primary:
diameter dp: 10.7 ± 0.25 km [*E]
rotation period RPp: 4.8 h [S20a]
amplitude in mag., rotational ΔM: 0.15 [S20a]
pole direction Β, λ: ? , ?

other data, secondary:
diameter ds: >3.2 km [*E]
diameter ratio ds/dp: >0.3 [*E]
component mag. difference ΔM: <2.61 [*E]
rotation period RPs: 25.798 h [S20a]

-- (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:

© 2020-2021, 2022 by Wm. Robert Johnston.
Last modified 30 April 2022.
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