Asteroids with Satellites Database--Johnston's Archive

(2337) Boubin

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

orbital data, primary (osculating elements) [JPL] :
semimajor axis a: 2.594214155 AU
orbital period P: 4.178387725 yr
(= 1526.18494 d)
eccentricity e: 0.168570654
perihelion distance q: 2.15690578 AU
aphelion distance Q: 3.031522531 AU
inclination i: 14.3477768°
argument of perihelion ω: 27.163326°
ascending node Ω: 37.241717°
mean anomaly M: 33.437752°
perihelion passage TP: 2018 Dec 06.243905
Epoch: 2019 Apr 27
data arc: 1955-2018 (1370 obs.)
Earth MOID: 1.17756 AU
Jupiter Tisserand invariant TJ: 3.354

orbital data, secondary:
semimajor axis as: 13 km [*E]
separation/primary radius as/rp:3.3 [*E]
separation/Hill radius as/rH:0.010 [*E]
orbital period Ps: 0.6704 ± 0.0004 d [B19a]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 12.1 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 8.01 ± 0.25 km [M12b]
geometric albedo: 0.436 ± 0.073 [M12b]
color index U-B: ?
color index B-V: ?
taxonomic type: ?
mass m: ?
density ρ: (1.6 g/cm3) [*A]
Hill radius rH: 1300 km [*E]

other data, primary:
diameter dp: 7.91 km [*D]
rotation period RPp: 2.53163 ± 0.00009 h [B19a]
amplitude in mag., rotational ΔM: 0.06 [B19a]
amplitude in mag., mutual events ΔM:0.03 [B19a]
pole direction Β, λ: ? , ?

other data, secondary:
diameter ds: >1.27 km [*D]
diameter ratio ds/dp: >0.16 [B19a]
component mag. difference ΔM: >4.0 [*D]
rotation period RPs: ?

-- (2337) Boubin --discovery and notes:

Primary discovered 1976 Oct 22 from Zimmerwald, Switzerland by P. Wild. Alternate designation(s): 1976 UH1, 1955 TV, 1970 HF. Linked to prediscovery observations from 1955 Oct 11. Permanent number assigned 1981 Jan 01.

Named 1990 Dec 02 for the mountain in Bohemia [MPC017465].

Companion discovered 2018 Oct 24 by V. Benishek, P. Pravec, D. Pray, O. Labrevoir, A. Carbognani, R. Durkee, and F. Pilcher using lightcurve observations from Sopot Observatory, Serbia; Sugarloaf Mountain Observatory, South Deerfield, Massachusetts, USA; Saint-Michel l’Observatoire, France; Shed of Science South Observatory, Pontotoc, Texas, USA; Organ Mesa Observatory, Las Cruces, New Mexico, USA. Announced 2019 Jan 07 [B19a].

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:

© 2019, 2022 by Wm. Robert Johnston.
Last modified 30 April 2022
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