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Asteroids with Satellites Database--Johnston's Archive

(4514) Vilen

compiled by Wm. Robert Johnston
last updated29 May 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:main belt asteroid


orbital data, primary (osculating elements)[JPL]:

semimajor axisa:2.344769957 AU
orbital periodP:3.590462221 yr
(= 1311.441095 d)
eccentricitye:0.152686767
perihelion distanceq:1.98675461 AU
aphelion distanceQ:2.702785302 AU
inclinationi:7.9606864°
argument of perihelionω:88.423291°
ascending nodeΩ:110.390806°
mean anomalyM:332.233015°
perihelion passageTP:2015 Mar 20.152124
Epoch:2014 Dec 09
data arc:1972-2015(1075 obs.)
Earth MOID:1.0051 AU
Jupiter Tisserand invariantTJ:3.533

orbital data, secondary:

semimajor axisas:10 km[*E]
separation/primary radiusas/rp:3.4 [*E]
separation/Hill radiusas/rH:0.011 [*E]
orbital periodPs:0.7021± 0.0004d [P15d]
eccentricityes:?
normalized ang. mom.αL:?
other data, system (combined):
absolute mag.H:13.6[MPC]
slope parameterG:(0.15) [*A]
effective diameterdE:6.01 km [*E]
geometric albedo:(0.16) [*A]
color indexU-B:?
color indexB-V:?
taxonomic type:X/M (Tholen) [P15d]
massm:?
densityρ:(1.6 g/cm3) [*A]
Hill radiusrH:900 km [*E]

other data, primary:

diameterdp:5.82 km [*E]
rotation periodRPp:2.89224± 0.00009h [P15d]
amplitude in mag., rotationalΔM:0.09 [P15d]
pole directionΒ, λ:?,?

other data, secondary:

diameterds:>1.51km [*E]
diameter ratiods/dp:>0.26 [P15d]
component mag. differenceΔM:<2.9 [*D]
rotation periodRPs:?

--(4514) Vilen --discovery and notes:

Primary discovered1972 Apr 19from Nauchnyj, Crimea, Ukraine, USSRby T. M. Smirnova.Alternate designation(s):1972 HX, 1972 KA, 1982 BR8, 1986 CE, 1986 ER1.Permanent number assigned 1990 Jul 08.

Named 1997 Aug 18 for Vilen V. Nesterov (1935-) [MPC030475].

Companion discovered2015 Apr 16 by D. Pray, P. Pravec, K. Hornoch, P. Kusnirak, J. Vrastil, H. Kucakova, V. Chiorny, V. Shechenko, V. Reddy, W. Cooney, J. Gross, and D. Terrellusinglightcurve observations from Sugarloaf Mountain Observatory, South Deerfield, MA; Ondrejov Observatory; Kharkiv Observatory; Planetary Science Institute, Tucson, AZ; Sonoita Research Institute, Sonoita, AZ; Southwest Research Institute, USA.Announced2015 May 22 [P15d].

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


©2015, 2019by Wm. Robert Johnston.
Last modified29 May 2019.
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