Asteroids with Satellites Database--Johnston's Archive
(60621)
2000 FE8
compiled by Wm. Robert Johnston
last updated
20 September 2014
--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 Β, λ: |
?
,
?
|
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
Hubble Space Telescope
observations from Hubble Space Telescope.
Announced
2007 Mar 03 [N07d].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Noll, K. S., Grundy, W. M., Kern, S. D., Levison, H. F., & Stephens, D. C. 2007, International Astronomical Union Circular 2004 PB_108 and (60621) 2000 FE_8
©
2007-2008, 2014
by Wm. Robert Johnston.
Last modified
20 September 2014.
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