(32039) 2000 JO23

compiled by Wm. Robert Johnston
last updated 13 January 2009

Orbital elements and other data (Assumed or derived values in parenthesis, my estimates in italics and parenthesis. Source identifications in brackets, see this link for sources):

orbital data, primary (osculating elements) [JPL]:
semimajor axis a: 2.2232239 AU
orbital period P: 3.31 y (=1,210.80 d)
eccentricity e: 0.2821145
perihelion distance q: 1.5960202 AU
aphelion distance Q: 2.8504276 AU
inclination i: 6.50825°
argument of perihelion omega: 353.19398°
ascending node OMEGA: 303.96425°
mean anomaly M: 43.50556°
perihelion passage TP: 2007-06-02.68
Epoch: 27 OCT 2007
data arc: 1954-2001 (46 obs.)

orbital data, secondary:
semimajor axis a: (40 km?)
semimajor axis/primary radius a/Rp: (30?)
orbital period P: 360 h (=15 d) [C1147]
eccentricity e: ?

other data, primary:
diameter: (2.5 km?)
absolute magnitude H: 15.39 ± 0.03 [C1147]
rotation period: 11.094 ± 0.004 h [HHa]
3.2990 ± 0.0002 h,
6.5979 ± 0.0009 h,
or 11.099 ± 0.003 h [C1147]
amplitude delta M: 0.08 ± 0.02 [HHa]
0.32 [C1147]
color index B-V: ?
color index V-R: ?
color index R-I: ?
slope parameter G: (0.15) assumed
geometric albedo: 0.25 ± 0.03 [C1147]
mass: ?
density: ?
type: ?

other data, secondary:
diameter: (1.5 km?)
diameter ratio Ds/Dp: 0.58 [C1147]
component magnitude difference: (1.2)
rotation period: 3.2990 ± 0.0002 h,
6.5979 ± 0.0009 h,
or 11.099 ± 0.003 h [C1147]

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

Primary discovered 7 May 2000 by the LINEAR program at Socorro, New Mexico, USA; linked to observations from 1954. Alternate designations 1954 SE1, 1977 OF, 1997 WZ20.

Secondary identified 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 based on lightcurve observations from 3 September to 8 November 2007; announced 23 November 2007.

See more information and links at Asteroid/Comet Connection Catchall Catalog page

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:

© 2007, 2009 by Wm. Robert Johnston.
Last modified 13 January 2009.
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