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Asteroids with Satellites Database--Johnston's Archive
(4868) Knushevia
compiled by Wm. Robert Johnston
last updated23 June 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, inner
orbital data, primary (osculating elements)[JPL]: | semimajor axisa: | 1.960501539 AU | | orbital periodP: | 2.745053299 yr
(= 1002.6496539 d) | | eccentricitye: | 0.068090629 | | perihelion distanceq: | 1.82677757 AU | | aphelion distanceQ: | 2.094225512 AU | | inclinationi: | 22.1026659° | | argument of perihelionω: | 94.355385° | | ascending nodeΩ: | 187.534148° | | mean anomalyM: | 157.592422° | | perihelion passageTP: | 2013 Sep 26.08337 | | Epoch: | 2014 Dec 09 | | data arc: | 1983-2015(741 obs.) | | Earth MOID: | 0.908334 AU | | Jupiter Tisserand invariantTJ: | 3.789 |
orbital data, secondary: | semimajor axisas: | 2.1 km[*E] | | separation/primary radiusas/rp: | 2.8 [*E] | | separation/Hill radiusas/rH: | 0.0097 [*E] | | orbital periodPs: | 0.49675± 0.00012d [W15i] | | eccentricityes: | ? | | normalized ang. mom.αL: | ? |
| other data, system (combined):| absolute mag.H: | 14.8[MPC] | | slope parameterG: | (0.15) [*A] | | effective diameterdE: | 1.535± 0.322 km [M11b] | | geometric albedo: | 1[M11b] | | color indexU-B: | ? | | color indexB-V: | ? | | taxonomic type: | ? | | massm: | ? | | densityρ: | (1.6 g/cm3) [*A] | | Hill radiusrH: | 220 km [*E] |
other data, primary: | diameterdp: | 1.52± 0.32 km [*D] | | rotation periodRPp: | 3.1422± 0.0001h [W15i] | | amplitude in mag., rotationalΔM: | 0.05± 0.01 [W15i] | | amplitude in mag., mutual eventsΔM: | 0.02 [W15i] | | pole directionΒ, λ: | ?,? |
other data, secondary: | diameterds: | >0.2km [*D] | | diameter ratiods/dp: | >0.13± 0.03 [W15i] | | component mag. differenceΔM: | 4.4 [*D] | | rotation periodRPs: | 11.922± 0.003h [W15i] | |
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--(4868) Knushevia --discovery and notes:
Primary discovered1989 Oct 27from Palomar Observatory, California, USAby E. F. Helin.Alternate designation(s):1989 UN2, 1988 DE5.Linked to prediscovery observations from 1983 Jul 11.Permanent number assigned 1991 Jun 27.
Named 2002 Apr 27 for Kiev National Taras Shevchenko University, Kiev, Ukraine [MPC45336].
Companion discovered2013 Apr 18 by B. D. Warner and R. D. Stephensusinglightcurve observations from Center for Solar System Studies, Landers, California, United States.Announced2015 Jun [W15i].
--Links, more technical:
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--Links to ADS abstracts:
©2015by Wm. Robert Johnston.
Last modified23 June 2015.Return toHome. Return toAstronomy and Space. Return toAsteroids with Satellites.
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