Asteroids with Satellites Database--Johnston's Archive

(2873) Binzel

compiled by Wm. Robert Johnston
last updated 27 May 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: main belt asteroid


orbital data, primary (osculating elements) [JPL] :
semimajor axis a: 2.2507451413 AU
orbital period P: 3.3766767067 yr
(= 1233.3544605 d)
eccentricity e: 0.158467956
perihelion distance q: 1.89407416 AU
aphelion distance Q: 2.6074161226 AU
inclination i: 5.9011384°
argument of perihelion ω: 168.392968°
ascending node Ω: 100.970741°
mean anomaly M: 287.998516°
perihelion passage TP: 2019 Dec 29.675976
Epoch: 2019 Apr 27
data arc: 1935-2018 (2054 obs.)
Earth MOID: 0.877874 AU
Jupiter Tisserand invariant TJ: 3.604


orbital data, secondary:
semimajor axis as: ? [*E]
orbital period Ps: 1.8575 ± 0.0012 d [V19b]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 12.99 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 6.43 ± 0.47 km [JPL]
geometric albedo: 0.272 ± 0.06 [JPL]
color index U-B: ?
color index B-V: ?
taxonomic type: Sq (SMASSII) [JPL]
mass m: ?
density ρ: (1.6 g/cm3) [*A]
Hill radius rH: 920 km [*E]

other data, primary:
diameter dp: 6.24 km [*D]
rotation period RPp: 2.70371 ± 0.00008 h [V19b]
amplitude in mag., rotational ΔM: 0.11 [V19b]
amplitude in mag., mutual events ΔM:0.065 ±0.025 [V19b]
pole direction Β, λ: ? , ?


other data, secondary:
diameter ds: >1.56 km [*D]
diameter ratio ds/dp: >0.25 [V19b]
component mag. difference ΔM: <3.0 [*D]
rotation period RPs: ?

-- (2873) Binzel --discovery and notes:

Primary discovered 1982 Mar 28 from Anderson Mesa Station, Arizona, USA by E. Bowell. Alternate designation(s): 1982 FR, 1935 KH, 1935 MH, 1938 GA, 1959 RA1. Linked to prediscovery observations from 1935 May 24. Permanent number assigned 1983 Apr 27.

Named 1984 Nov 08 for Richard P. Binzel (1958-) [MPC009215].

Companion discovered 2019 Mar 08 by F. Vachier, P. Pravec, H. Kucakova, K. Hornoch, P. Kusnirak, D. Pray, W. Cooney, J. Gross, D. Terrell, B. Flanagan, B. Pellerin, R. Durkee, V. Benishek, J. Berthier, A. Klotz, J.-P. Teng, A. Peyrot, and P. Thierry using lightcurve observations from Observatoire des Makes, Ondrejov Observatory, Sugarloaf Mountain Obervatory, Sonoita Research Observatory, Madrona Peak Observatory, Shed of Science South Observatory, and Sopot Observatory, Serbia. Announced 2019 May 17 [V19b].

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


© 2019 by Wm. Robert Johnston.
Last modified 27 May 2019.
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