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Asteroids with Satellites Database--Johnston's Archive

2015 VM173

compiled by Wm. Robert Johnston
last updated17 August 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:43.741 AU
orbital periodP:289.3 yr
(= 105665.1 d)
eccentricitye:0.05834
perihelion distanceq:41.189 AU
aphelion distanceQ:46.293 AU
inclinationi:2.4365°
argument of perihelionω:93.47°
ascending nodeΩ:183.778°
mean anomalyM:131.67°
perihelion passageTP:1913 Jul 06.0
Epoch:2019 Apr 27
data arc:2014-2017(38 obs.)
Earth MOID:40.173 AU
Jupiter Tisserand invariantTJ:5.903

orbital data, secondary:

semimajor axisas:5290± 70 km (separation) [G19c]
separation/primary radiusas/rp:52.9 [*E]
separation/Hill radiusas/rH:0.008 [*E]
orbital periodPs:41d [*E]
eccentricityes:?
normalized ang. mom.αL:?
other data, system (combined):
absolute mag.H:6.1[MPC]
6.5 ± 0.5 [G19c]
slope parameterG:(0.15) [*A]
effective diameterdE:265 km [*E]
geometric albedo:(0.09) [*A]
color indexU-B:?
color indexB-V:?
taxonomic type:?
massm:?
densityρ:(1 g/cm3) [*A]
Hill radiusrH:690000 km [*E]

other data, primary:

diameterdp:200 km [*E]
rotation periodRPp:?
amplitude in mag., rotationalΔM:?
pole directionΒ, λ:?,?

other data, secondary:

diameterds:174km [*E]
diameter ratiods/dp:0.87 [*D]
component mag. differenceΔM:0.3 [G19c]
rotation periodRPs:?

-- 2015 VM173 --discovery and notes:

Primary discovered2015 Nov 07from Mauna Kea Observatory, Hawaii, USAby Outer Solar System Origins Survey.Linked to prediscovery observations from 2014 Nov 17.

Companion discovered2019 Aug 03usingHubble Space Telescope observations.Announced2019 Aug [G19c].

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


©2019by Wm. Robert Johnston.
Last modified17 August 2019.
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