(60621) 2000 FE8

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(60621) 2000 FE8
Orbit of 2000 FE8.gif
Orbit of (60621) 2000 FE8
Discovery [1][2]
Discovered by J. Kavelaars
B. Gladman
J.-M. Petit
M. Holman
Discovery site Mauna Kea Obs.
Discovery date 27 March 2000
Designations
MPC designation (60621) 2000 FE8
2000 FE8
SDO · TNO
Orbital characteristics[1][3]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 4
Observation arc 6.80 yr (2,485 days)
Aphelion 78.590 AU
Perihelion 33.185 AU
55.888 AU
Eccentricity 0.4062
417.81 yr (152,607 days)
30.201°
0° 0m 8.64s / day
Inclination 5.8614°
3.8785°
144.17°
Known satellites 1
Physical characteristics
Dimensions 152 km[4]
Mean density
1 g/cm3[4]
0.09[4]
Temperature 37 K (-236°C)
(yellow-orange) B−V=0.75; V−R=0.48[5]
6.9[1]

(60621) 2000 FE8 is a scattered-disk object that resides in a distant, eccentric orbit that brings it 1.1 to 2.6 times farther than Neptune. This object is locked in a 2:5 orbital resonance with Neptune, it is known to have a single moon, S/2007 (60621) 1.[6]

Orbit[edit]

2000 FE8 has an extremely eccentric which crosses the paths of many other trans-Neptunian objects, including almost all of the dwarf planets and dwarf planet candidates. As a result, its position alternates between the Kuiper Belt and the Scattered disk.[1]

Resonance with Neptune[edit]

2000 FE8 is part of a group of trans-Neptunian objects that orbit in a 2:5 resonance with Neptune.[7] That means that for every five orbits that Neptune completes, 2000 FE8 makes only two.[6] Several other objects are in the same orbital resonance, the largest of which is (84522) 2002 TC302.

Moon[edit]

Like many objects of the Kuiper Belt and Scattered Disk, 2000 FE8 has a moon. This moon, S/2007 (60621) 1, was discovered by the Hubble Space Telescope seven years after 200 FE8 itself was found.[8] The moon orbits at 1180 kilometres away from 2000 FE8, completing one orbit every week.[4] It is thought to be 115 km[4] in diameter, just 75.7% the diameter of 2000 FE8 itself. From the surface of 2000 FE8, S/2007 (60621) 1 would have an apparent diameter of roughly 6°,[a] twelve times larger than the Sun appears from Earth.

Gallery[edit]

Notes[edit]

  1. ^ Calculated by solving .

References[edit]

  1. ^ a b c d "JPL Small-Body Database Browser: 60621 (2000 FE8)" (2007-01-15 last obs.). Jet Propulsion Laboratory. Retrieved 28 May 2017. 
  2. ^ "60621 (2000 FE8)". Minor Planet Center. Retrieved 22 August 2016. 
  3. ^ "List Of Centaurs and Scattered-Disk Objects (by semimajor axis)". Minor Planet Center. 4 October 2013. Retrieved 2013-10-04. 
  4. ^ a b c d e Johnston, W. R. (26 November 2008). "(60621) 200 FE8". Johnston's Archive. Retrieved 2013-10-01. 
  5. ^ Tegler, S. C.; et al. (2003). "Color patterns in the Kuiper belt: a possible primordial origin". Astrophysical Journal. Bibcode:2003ApJ...599L..49T. doi:10.1086/381076. 
  6. ^ a b Johnston, W. R. (5 July 2013). "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved 2013-10-05. 
  7. ^ Orbit and Astrometry for 60621
  8. ^ Green, Daniel (3 March 2007). "Circular No. 8816" (PDF). Harvard. Retrieved 2013-10-05. 

External links[edit]