Asteroids with Satellites Database--Johnston's Archive

(60621) 2000 FE8

compiled by Wm. Robert Johnston
last updated 11 May 2014
under construction--testing upgrades!

--Orbital and physical data--

(See this page for definitions of quantities; source codes in brackets, see this link for full references; *A, *D, and *E indicate assumed, derived, and estimated values, respectively.)

dynamical type, primary: TNO, 2:5 resonance


orbital data, primary (osculating elements) [JPL] :
semimajor axis a: 55.580 AU
orbital period P: 414.363 yr (= 151346.1 d)
eccentricity e: 0.40571
perihelion distance q: 33.0304 AU
aphelion distance Q: 78.129 AU
inclination i: 5.86215°
argument of perihelion ω: 143.294°
ascending node Ω: 3.88070°
mean anomaly M: 27.885°
perihelion passage TP: 1982 Apr 17
Epoch: 2014 May 23
data arc: 2000-2007 (40 obs.)
Earth MOID: 32.0443 AU
Jupiter Tisserand invariant TJ: 6.037
Neptune Tisserand invariant TN:3.01 [*D]


orbital data, secondary:
semimajor axis as: 1180 ± 80 km (separation) [N07d]
separation/primary radius as/rp:16 [*E]
separation/Hill radius as/rH:0.0033 [*E]
orbital period Ps: 7.5 d [*E]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 6.9 [MPC]
6.82 ± 0.41 [JPL]
slope parameter G: 0.15 [*A]
effective diameter dE: 183 km [*E]
geometric albedo: 0.09 [*A]
color index U-B: ?
color index B-V: 0.75 [T03b]
color index V-R:0.48± 0.01 [T03b]
color index B-R:1.23± 0.01 [T03b]
color index V-I:0.99 [D02a]
taxonomic type: ?
mass m: ?
density ρ: 1 g/cm3 [*A]
Hill radius rH: 360000 km [*E]

other data, primary:
diameter dp: 146 km [*E]
rotation period RPp: ?
amplitude in mag., rotational ΔM: ?
pole direction : ? ; ?


other data, secondary:
diameter ds: 111 km [*E]
diameter ratio ds/dp: 0.759 ± 0.105 [N07d]
component mag. difference ΔM: 0.6 [I8816]
rotation period RPs: ?

-- (60621) 2000 FE8 --discovery and notes:

Primary discovered 2000 Mar 27 from Mauna Kea Observatory, Hawaii, USA by J. J. Kavelaars, B. Gladman, J.-M. Petit, and M. J. Holman. . Permanent number assigned 2003 Jun 14.

Companion discovered 2007 Jan 15 by K. S. Noll, W. M. Grundy, S. D. Kern, H. F. Levison, and D. C. Stephens using HST observations from Hubble Space Telescope. Announced 2007 Mar 03 [N07d].

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


© 2007-2008, 2014 by Wm. Robert Johnston.
Last modified 11 May 2014.
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