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Asteroids with Satellites Database--Johnston's Archive
2015 VW168
compiled by Wm. Robert Johnston
last updated15 December 2019--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:TNO, Cubewano
orbital data, primary (osculating elements)[JPL]: | semimajor axisa: | 42.4978 AU | | orbital periodP: | 277.045 yr
(= 101192 d) | | eccentricitye: | 0.04496 | | perihelion distanceq: | 40.587 AU | | aphelion distanceQ: | 44.4083 AU | | inclinationi: | 1.95474° | | argument of perihelionω: | 197.68° | | ascending nodeΩ: | 96.713° | | mean anomalyM: | 113.69° | | perihelion passageTP: | 1931 Oct 29 | | Epoch: | 2019 Apr 27 | | data arc: | 2014-2017(45 obs.) | | Earth MOID: | 39.5706 AU | | Jupiter Tisserand invariantTJ: | 5.829 | | Neptune Tisserand invariantTN: | 3.08143772075793 [*D] |
orbital data, secondary: | semimajor axisas: | 5960± 130 km (separation) [G19c] | | separation/primary radiusas/rp: | 140 [*E] | | separation/Hill radiusas/rH: | 0.022 [*E] | | orbital periodPs: | 190d [*E] | | eccentricityes: | ? | | normalized ang. mom.αL: | ? |
| other data, system (combined):| absolute mag.H: | 8.1[MPC]
8.5 ± 0.5 [G19c] | | slope parameterG: | (0.15) [*A] | | effective diameterdE: | 106 km [*E] | | geometric albedo: | (0.09) [*A] | | color indexU-B: | ? | | color indexB-V: | ? | | taxonomic type: | ? | | massm: | ? | | densityρ: | (1 g/cm3) [*A] | | Hill radiusrH: | 270000 km [*E] |
other data, primary: | diameterdp: | 84 km [*E] | | rotation periodRPp: | ? | | amplitude in mag., rotationalΔM: | ? | | pole directionΒ, λ: | ?,? |
other data, secondary: | diameterds: | 64km [*E] | | diameter ratiods/dp: | 0.76 [*D] | | component mag. differenceΔM: | 0.6 [G19c] | | rotation periodRPs: | ? | |
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-- 2015 VW168 --discovery and notes:
Primary discovered2015 Nov 06from Mauna Kea Observatory, Hawaii, USAby Solar System Origins Legacy Survey (A. H. Parker et al.).Linked to prediscovery observations from 2014 Nov 17.
Companion discovered2019 Oct 22 by Solar System Origins Legacy Survey (A. H. Parker et al.)usingHubble Space Telescope observations from Hubble Space Telescope.Announced2019 Nov 05 [G19c].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
©2019by Wm. Robert Johnston.
Last modified15 December 2019.Return toHome. Return toAstronomy and Space. Return toAsteroids with Satellites.
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