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Asteroids with Satellites Database--Johnston's Archive

(3433) Fehrenbach

compiled by Wm. Robert Johnston
last updated27 November 2015

--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:2.393726861 AU
orbital periodP:3.703496084 yr
(= 1352.727493 d)
eccentricitye:0.186430957
perihelion distanceq:1.94746207 AU
aphelion distanceQ:2.83999165 AU
inclinationi:4.5189577°
argument of perihelionω:74.276912°
ascending nodeΩ:336.693855°
mean anomalyM:328.467404°
perihelion passageTP:2015 Oct 23.486138
Epoch:2015 Jun 27
data arc:1935-2015(1204 obs.)
Earth MOID:0.964115 AU
Jupiter Tisserand invariantTJ:3.502

orbital data, secondary:

semimajor axisas:14 km[*E]
separation/primary radiusas/rp:3.8 [*D]
separation/Hill radiusas/rH:0.011 [*D]
orbital periodPs:0.8194± 0.0002d [P15h]
eccentricityes:?
normalized ang. mom.αL:?
other data, system (combined):
absolute mag.H:12.5[MPC]
slope parameterG:(0.15) [*A]
effective diameterdE:7.74± 0.06 km [M11b]
geometric albedo:0.204± 0.028[M11b]
color indexU-B:?
color indexB-V:?
taxonomic type:?
massm:?
densityρ:(1.6 g/cm3) [*A]
Hill radiusrH:1400 km [*E]

other data, primary:

diameterdp:7.4 km [*D]
rotation periodRPp:3.916± 0.0003h [P15h]
amplitude in mag., rotationalΔM:0.27 [P15h]
amplitude in mag., mutual eventsΔM:0.135 ±0.035 [P15h]
pole directionΒ, λ:?,?

other data, secondary:

diameterds:2.3km [*D]
axial ratiosa/b, b/c:1.3;? [P15h]
diameter ratiods/dp:0.31 [P15h]
component mag. differenceΔM:2.5 [*D]
rotation periodRPs:19.665± 0.005h [P15h]

--(3433) Fehrenbach --discovery and notes:

Primary discovered1963 Oct 15from Goethe Link Observatory, Brooklynby Indiana Asteroid Program.Alternate designation(s):1963 TJ1, 1935 EG, 1957 BF, 1970 PA1, 1974 RJ1, 1985 QD.Linked to prediscovery observations from 1935 Mar 07.

Companion discovered2015 Oct 31 by D. Pray, P. Pravec, A. Marchini, F. Salvaggio, R. Papini, J. Pollock, D. Caton, R. Hawkins, V. Benishek, A. Smith, D. Reichart, J. Haislipusinglightcurve observations from Sugarloaf Mountain Observatory, South Deerfield, Massachusetts, USA; Ondrejov Observatory; University of Siena; Appalachian State University, USA; Belgrade Astronomical Observatory; Gemini North; University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.Announced2015 Nov 24 [P15h].

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


©2015by Wm. Robert Johnston.
Last modified27 November 2015.
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