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Asteroids with Satellites Database--Johnston's Archive
(16525) Shumarinaiko
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
orbital data, primary (osculating elements)[JPL]: | semimajor axisa: | 2.399529197 AU | | orbital periodP: | 3.717040219 yr
(= 1357.648940 d) | | eccentricitye: | 0.138775564 | | perihelion distanceq: | 2.06653318 AU | | aphelion distanceQ: | 2.732525214 AU | | inclinationi: | 2.4285840° | | argument of perihelionω: | 180.21635° | | ascending nodeΩ: | 7.66415° | | mean anomalyM: | 72.495981° | | perihelion passageTP: | 2013 Aug 22.59974 | | Epoch: | 2014 May 23 | | data arc: | 1950-2013(1169 obs.) | | Earth MOID: | 1.06786 AU | | Jupiter Tisserand invariantTJ: | 3.512 |
orbital data, secondary: | semimajor axisas: | 8.1 km[*E] | | separation/primary radiusas/rp: | 3.1 [*E] | | separation/Hill radiusas/rH: | 0.0097 [*E] | | orbital periodPs: | 0.6004± 0.0002d [W13e] | | eccentricityes: | ? | | normalized ang. mom.αL: | ? |
| other data, system (combined):| absolute mag.H: | 13.5[MPC] | | slope parameterG: | (0.15) [*A] | | effective diameterdE: | 5.25± 0.15 km [M11b] | | geometric albedo: | 0.306± 0.033[M11b] | | color indexU-B: | ? | | color indexB-V: | ? | | taxonomic type: | ? | | massm: | ? | | densityρ: | (1.6 g/cm3) [*A] | | Hill radiusrH: | 830 km [*E] |
other data, primary: | diameterdp: | 5.18± 0.15 km [*D] | | rotation periodRPp: | 2.5932± 0.0003h [W13e] | | amplitude in mag., rotationalΔM: | 0.08± 0.01 [W13e] | | amplitude in mag., mutual eventsΔM: | 0.05 [W13e] | | pole directionΒ, λ: | ?,? |
other data, secondary: | diameterds: | 0.83± 0.11km [*D] | | diameter ratiods/dp: | >0.16± 0.02 [W13e] | | component mag. differenceΔM: | <4.0± 0.3 [*D] | | rotation periodRPs: | 14.409h [W13e] | |
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--(16525) Shumarinaiko --discovery and notes:
Primary discovered1991 Feb 14from Kitami, Hokkaido, Japanby K. Endate and K. Watanabe.Alternate designation(s):1991 CU2, 1996 TE51.Linked to prediscovery observations from 1950 Mar 21.Permanent number assigned 2000 Sep 13.
Named 2005 Dec 15 for Lake Shumarinai, Hokkaido, Japan [MPC55722].
Companion discovered2013 Jan 09usinglightcurve observations.Announced2013 Feb .
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
©2013, 2014by Wm. Robert Johnston.
Last modified21 September 2014.Return toHome. Return toAstronomy and Space. Return toAsteroids with Satellites.
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