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Asteroids with Satellites Database--Johnston's Archive
(7958) Leakey
compiled by Wm. Robert Johnston
last updated21 September 2014--Orbital and physical data--
(Seethis page for definitions of quantities; source codes in brackets, seethis link for full references; *A, *D, and *E indicate assumed, derived, and estimated values, respectively.)
dynamical type, primary:main belt asteroid, Hungaria
orbital data, primary (osculating elements)[JPL]: | semimajor axisa: | 1.877005940 AU | | orbital periodP: | 2.571619277 yr
(= 939.2839410 d) | | eccentricitye: | 0.077056381 | | perihelion distanceq: | 1.73237065 AU | | aphelion distanceQ: | 2.021641225 AU | | inclinationi: | 21.9707404° | | argument of perihelionω: | 154.054586° | | ascending nodeΩ: | 195.745035° | | mean anomalyM: | 196.600545° | | perihelion passageTP: | 2015 Jul 23.3291 | | Epoch: | 2014 May 23 | | data arc: | 1986-2014(626 obs.) | | Earth MOID: | 0.73966 AU | | Jupiter Tisserand invariantTJ: | 3.883 |
orbital data, secondary: | semimajor axisas: | 10 km[*E] | | separation/primary radiusas/rp: | 7.1 [*E] | | separation/Hill radiusas/rH: | 0.026 [*E] | | orbital periodPs: | 2.095± 0.003d [W12b] | | eccentricityes: | ? | | normalized ang. mom.αL: | ? |
| other data, system (combined):| absolute mag.H: | 14.1[MPC] | | slope parameterG: | (0.15) [*A] | | effective diameterdE: | 2.94± 0.17 km [M12b] | | geometric albedo: | 0.468± 0.073[M12b] | | color indexU-B: | ? | | color indexB-V: | ? | | taxonomic type: | ? | | massm: | ? | | densityρ: | (1.6 g/cm3) [*A] | | Hill radiusrH: | 380 km [*E] |
other data, primary: | diameterdp: | 2.82± 0.16 km [*D] | | rotation periodRPp: | 2.34843± 0.00006h [W12b] | | amplitude in mag., rotationalΔM: | 0.22 [W12b] | | pole directionΒ, λ: | ?,? |
other data, secondary: | diameterds: | 0.85± 0.1km [*D] | | axial ratiosa/b, b/c: | 2;? [] | | diameter ratiods/dp: | 0.30± 0.03 [W12b] | | component mag. differenceΔM: | 2.6± 0.2 [*D] | | rotation periodRPs: | ? | |
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--(7958) Leakey --discovery and notes:
Primary discovered1994 Jun 05from Palomar Observatory, California, USAby C. S. Shoemaker and E. M. Shoemaker.Alternate designation(s):1994 LE3, 1991 GT.Linked to prediscovery observations from 1986 May 05.Permanent number assigned 1997 Oct 16.
Named 1998 Apr 11 for Mary Leakey (1913-1996), Louis Leakey (1903-1972), and Richard Leakey (1944-) [MPC31612].
Companion discovered2012 Jun 13 by B. D. Warner, D. Coley, and A. W. Harrisusinglightcurve observations.Announced2012 Oct [W12b].
--Links, more technical:
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--Links to ADS abstracts:
©2012, 2014by Wm. Robert Johnston.
Last modified21 September 2014.Return toHome. Return toAstronomy and Space. Return toAsteroids with Satellites.
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