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Asteroids with Satellites Database--Johnston's Archive

(175706) 1996 FG3

compiled by Wm. Robert Johnston
last updated16 November 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:NEA, Apollo(PHA)


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

semimajor axisa:1.05411509537 AU
orbital periodP:1.08226110054485 yr
(= 395.30333276 d)
eccentricitye:0.349930304
perihelion distanceq:0.685248279 AU
aphelion distanceQ:1.42298191144 AU
inclinationi:1.9917805°
argument of perihelionω:23.994556°
ascending nodeΩ:299.726703°
mean anomalyM:354.0375874°
perihelion passageTP:2014 Dec 15.5471155
Epoch:2014 Dec 09
data arc:1996-2014(1620 obs.)
Earth MOID:0.0283425 AU
Jupiter Tisserand invariantTJ:5.779

orbital data, secondary:

binary dynamical type:A [P07f]
semimajor axisas:3± 0.6 km[P06b]
separation/primary radiusas/rp:3.0 [S15a]
separation/Hill radiusas/rH:0.033 [*D]
orbital periodPs:0.67295± 0.000008d [S15a]
eccentricityes:0.035± 0.035[S15a]
normalized ang. mom.αL:0.82[P07f]
other data, system (combined):
absolute mag.H:18.4[MPC]
17.833 ± 0.024 [S15a]
slope parameterG:-0.041 [S15a]
effective diameterdE:1.69± 0.04 km [Y14a]
geometric albedo:0.045± 0.002[Y14a]
color indexU-B:?
color indexB-V:0.708[P00a]
color indexV-R:0.38 ± 0.003 [P00a]
color indexB-R:1.09 [P00a]
color indexV-I:0.71 [P00a]
taxonomic type:C (SMASSII) [JPL]
massm:4.26x1012kg [*D]
densityρ:1.3± 0.5 g/cm3[S15a]
Hill radiusrH:92 km [*D]

other data, primary:

diameterdp:1.69± 0.22 km [S15a]
axial ratiosa/b, b/c:1.06, 1.23 [S15a]
volume:2.53± 1.24[S15a]
rotation periodRPp:3.595195± 0.000003h [S15a]
amplitude in mag., rotationalΔM:?
pole directionΒ, λ:?,?

other data, secondary:

diameterds:0.49± 0.08km [S15a]
axial ratiosa/b, b/c:1.3;? [S15a]
diameter ratiods/dp:0.28± 0.015 [S09a]
component mag. differenceΔM:2.8± 0.1 [*D]
rotation periodRPs:16.15± 0.01h [P06b]

--(175706) 1996 FG3 --discovery and notes:

Primary discovered1996 Mar 24from Siding Spring Observatory, New South Wales, Australiaby R. H. McNaught.Permanent number assigned 2008 Feb 21.

Companion discovered1998 Dec 10usinglightcurve observations.Announced1998 Dec 26.

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


©2001-2008, 2014by Wm. Robert Johnston.
Last modified16 November 2014.
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