Asteroids with Satellites Database--Johnston's Archive

(32039) 2000 JO23

compiled by Wm. Robert Johnston
last updated 21 September 2014

--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: Mars crossing asteroid


orbital data, primary (osculating elements) [JPL] :
semimajor axis a: 2.222813496 AU
orbital period P: 3.314078107 yr
(= 1210.467028 d)
eccentricity e: 0.282754209
perihelion distance q: 1.59430362 AU
aphelion distance Q: 2.851323368 AU
inclination i: 6.5093088°
argument of perihelion ω: 353.199732°
ascending node Ω: 303.879979°
mean anomaly M: 37.133236°
perihelion passage TP: 2014 Jan 18.14289
Epoch: 2014 May 23
data arc: 1954-2013 (782 obs.)
Earth MOID: 0.577951 AU
Jupiter Tisserand invariant TJ: 3.587


orbital data, secondary:
binary dynamical type:A [M09a]
semimajor axis as: 53 km [*E]
separation/primary radius as/rp:27 [*E]
separation/Hill radius as/rH:0.107 [*E]
orbital period Ps: 15 d [P07d]
eccentricity es: ?
normalized ang. mom. αL: 2.93 [M09a]

other data, system (combined):
absolute mag. H: 14.5 [MPC]
15.39 ± 0.03 [P07d]
slope parameter G: (0.15) [*A]
effective diameter dE: 4.15 km [*E]
geometric albedo: (0.16 ) [*A]
color index U-B: ?
color index B-V: ?
taxonomic type: ?
mass m: ?
density ρ: (1.6 g/cm3) [*A]
Hill radius rH: 500 km [*E]

other data, primary:
diameter dp: 3.96 km [*E]
rotation period RPp: 6.5979 ± 0.0009 h [P07d]
amplitude in mag., rotational ΔM: 0.05 [W14e]
amplitude in mag., mutual events ΔM:0.32 [P07d]
pole direction Β, λ: ? , ?


other data, secondary:
diameter ds: 1.27 km [*E]
diameter ratio ds/dp: >0.32 [P07d]
component mag. difference ΔM: <2.5 [*D]
rotation period RPs: ?

-- (32039) 2000 JO23 --discovery and notes:

Primary discovered 2000 May 07 from Socorro, New Mexico, USA by LINEAR. Alternate designation(s): 1954 SE1, 1977 OF, 1997 WZ20. Linked to prediscovery observations from 1954 Sep 27. Permanent number assigned 2001 Nov 30.

Companion discovered 2007 Sep 03 by D. Pray, P. Pravec, P. Kusnirak, K. Hornoch, D. Higgins, W. Cooney, J. Gross, D. Terrell, J. Oey, A. Galad, L. Kornos, S. Gajdos, J. Vilagi, R. Stephens, F. Marchis, M. Baek, B. Macomber, V. Reddy, M. Husarik, and M. Pikler using lightcurve observations from Carbuncle Hill Observatory, Greene, Rhode Island, USA; Ondrejov Observatory, Czech Republic; Canberra, Australia; Sonoita Research Observatory, Sonoita, Arizona, USA; Leura, New South Wales, Australia; Modra Observatory, Slovakia; Goat Mountain Astronomical Research Station, Yucca Valley, CA; SETI Institute; University of California at Berkeley; University of North Dakota, Grand Forks; Skalnate Pleso Observatory. Announced 2007 Nov 23 [P07d].

--Links, more technical:

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--Links to ADS abstracts:


© 2007-2009, 2014 by Wm. Robert Johnston.
Last modified 21 September 2014.
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