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Asteroids with Satellites Database--Johnston's Archive
(80218) 1999 VO123
compiled by Wm. Robert Johnston
last updated7 September 2015--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
orbital data, primary (osculating elements)[JPL]: | semimajor axisa: | 2.218387762 AU | | orbital periodP: | 3.304122886 yr
(= 1206.853677 d) | | eccentricitye: | 0.027163402 | | perihelion distanceq: | 2.1581288 AU | | aphelion distanceQ: | 2.278646719 AU | | inclinationi: | 1.7962305° | | argument of perihelionω: | 188.25601° | | ascending nodeΩ: | 114.33295° | | mean anomalyM: | 310.64032° | | perihelion passageTP: | 2015 May 23.47196 | | Epoch: | 2014 Dec 09 | | data arc: | 1991-2015(423 obs.) | | Earth MOID: | 1.1437 AU | | Jupiter Tisserand invariantTJ: | 3.65 |
orbital data, secondary: | semimajor axisas: | 0.9 km[*D] | | separation/primary radiusas/rp: | 6.2 [P15f] | | separation/Hill radiusas/rH: | 0.019 [*E] | | orbital periodPs: | 1.38d [P15f] | | eccentricityes: | 0[P15f] | | normalized ang. mom.αL: | ? |
| other data, system (combined):| absolute mag.H: | 16.6[MPC] | | slope parameterG: | (0.15) [*A] | | effective diameterdE: | 1.58 km [*E] | | geometric albedo: | (0.16) [*A] | | color indexU-B: | ? | | color indexB-V: | ? | | taxonomic type: | ? | | massm: | ? | | densityρ: | (1.6 g/cm3) [*A] | | Hill radiusrH: | 50 km [*E] |
other data, primary: | diameterdp: | 0.28 km [P15f] | | rotation periodRPp: | 2.9± 0.5h [P15f] | | amplitude in mag., rotationalΔM: | ? | | pole directionΒ, λ: | ?,? |
other data, secondary: | diameterds: | 0.08km [*E] | | diameter ratiods/dp: | 0.3 [P15f] | | component mag. differenceΔM: | 2.6 [*D] | | rotation periodRPs: | ? | |
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--(80218) 1999 VO123 --discovery and notes:
Primary discovered1999 Nov 05from Kitt Peak Observatory, Arizona, USAby Spacewatch Program.Alternate designation(s): 2002 SX27.Linked to prediscovery observations from 1991 Apr 07.Permanent number assigned 2004 May 04.
Companion discovered2012 Oct 14 by Pravec, P., P. Scheirich, P. Kusnirak, K. Hornoch, and A. Galadusinglightcurve observations.Announced2015 Aug 05 [P15f].
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--Links to ADS abstracts:
©2015by Wm. Robert Johnston.
Last modified7 September 2015.Return toHome. Return toAstronomy and Space. Return toAsteroids with Satellites.
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