Asteroids with Satellites Database--Johnston's Archive

(2873) Binzel

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: 2.2508894 AU
orbital period P: 2.377065443 yr
(= 1233.473153 d)
eccentricity e: 0.158346491
perihelion distance q: 2.60731 AU
aphelion distance Q: 1.89446908 AU
inclination i: 5.90110044°
argument of perihelion ω: 168.206724°
ascending node Ω: 100.9690544°
mean anomaly M: 160.4942788°
perihelion passage TP: 2019 Dec 29.096155
Epoch: 2021 Jul 01
data arc: 1935-2021 (3299 obs.)
Earth MOID: 0.878663 AU
Jupiter Tisserand invariant TJ: 3.604

orbital data, secondary:
semimajor axis as: 21 km [*E]
separation/primary radius as/rp:6.7 [*E]
separation/Hill radius as/rH:0.017 [*E]
orbital period Ps: 1.8575 ± 0.0012 d [V19b]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 12.87 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 6.43 ± 0.47 km [M14c]
geometric albedo: 0.272 ± 0.060 [M14c]
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: 1270 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: <3.01 [*D]
rotation period RPs: ?

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

Primary discovered 1982 Mar 28 from Anderson Mesa Station, Flagstaff, 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, Czech Republic; Sugarloaf Mountain Obervatory, South Deerfield, Massachusetts, USA; Sonoita Research Observatory, Sonoita, Arizona, USA; Madrona Peak Observatory; Shed of Science South Observatory, Pontotoc, Texas, USA; Sopot Observatory, Serbia. Announced 2019 May 17 [V19b].

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--Links to ADS abstracts:

© 2019-2021, 2022 by Wm. Robert Johnston.
Last modified 30 April 2022.
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