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Asteroids with Satellites Database--Johnston's Archive
(18527) 1996 VJ30
compiled by Wm. Robert Johnston
last updated30 April 2022--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: | 2.3991578652 AU | | orbital periodP: | 3.71610724 yr
(= 1357.3338042 d) | | eccentricitye: | 0.143552493 | | perihelion distanceq: | 2.054752773 AU | | aphelion distanceQ: | 2.743562957 AU | | inclinationi: | 5.4545662° | | argument of perihelionω: | 104.780076° | | ascending nodeΩ: | 243.4416° | | mean anomalyM: | 69.026484° | | perihelion passageTP: | 2018 Aug 09.744500 | | Epoch: | 2019 Apr 27 | | data arc: | 1951-2018(1602 obs.) | | Earth MOID: | 1.05575 AU | | Jupiter Tisserand invariantTJ: | 3.507 |
orbital data, secondary: | semimajor axisas: | 6 km[*E] | | separation/primary radiusas/rp: | 3.8 [*E] | | separation/Hill radiusas/rH: | 0.010 [*E] | | orbital periodPs: | 0.7946± 0.0004d [B18h] | | eccentricityes: | ? | | normalized ang. mom.αL: | ? |
| other data, system (combined):| absolute mag.H: | 13.9[MPC] | | slope parameterG: | (0.15) [*A] | | effective diameterdE: | 3.35± 0.48 km [M11b] | | geometric albedo: | 0.572± 0.147[M11b] | | color indexU-B: | ? | | color indexB-V: | ? | | taxonomic type: | ? | | massm: | ? | | densityρ: | (1.6 g/cm3) [*A] | | Hill radiusrH: | 600 km [*E] |
other data, primary: | diameterdp: | 3.19 km [*D] | | rotation periodRPp: | 3.3529± 0.00009h [B18h] | | amplitude in mag., rotationalΔM: | 0.13 [B18h] | | amplitude in mag., mutual eventsΔM: | 0.155 ±0.055 [B18h] | | pole directionΒ, λ: | ?,? |
other data, secondary: | diameterds: | 1.02km [*D] | | axial ratiosa/b, b/c: | 1.4;? [B18h] | | diameter ratiods/dp: | 0.32± 0.02 [B18h] | | component mag. differenceΔM: | 2.5± 0.2 [*D] | | rotation periodRPs: | 3.3529± 0.00009h [B18h] | |
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--(18527) 1996 VJ30 --discovery and notes:
Primary discovered1996 Nov 07from Kushiro, Hokkaido, Japanby S. Ueda and H. Kaneda.Alternate designation(s): 1992 SV26.Linked to prediscovery observations from 1951 Aug 10.Permanent number assigned 2000 Nov 11.
Companion discovered2018 Sep 16 by V. Benishek, P. Pravec, K. Hornoch, P. Kusnirak, J. Oey, R. Groom, V. Chiorny, and N. Gartonyukusinglightcurve observations from Sopot Observatory, Serbia; Ondrejov Observatory, Czech Republic; Blue Mountains Observatory, Leura, New South Wales, Australia; Darling Range Observatory, Perth, Western Australia; Kharkiv Observatory, Chuguev, Ukraine; Crimean Astrophysical Observatory.Announced2018 Oct 14 [B18h].
--Links, more technical:
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--Links to ADS abstracts:
©2018, 2022by Wm. Robert Johnston.
Last modified30 April 2022.Return toHome. Return toAstronomy and Space. Return toAsteroids with Satellites.
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