(60621) 2000 FE8

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(60621) 2000 FE 8
Orbit of 2000 FE8
Orbit of (60621) 2000 FE8
Discovery and designation
Discovery site Mauna Kea Observatory
Discovery date 27 March 2000
Orbital characteristics[1][2][3]
Aphelion 77.88399 AU (11,651.2791 Gm)
Perihelion 33.00807 AU (4,937.9370 Gm)
55.44063 AU (8,293.8002 Gm)
Eccentricity 0.40468108
412.87 years
27.58809°
Inclination 5.865358°
3.896393°
143.0882°
Known satellites 1
Physical characteristics
Dimensions 152 km (94 mi)[2]
0.09[2]
Temperature 37 K (-236°C)
(yellow-orange) B−V=0.75; V−R=0.48[4]
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.[1] This object is locked in a 2:5 orbital resonance with Neptune. It is known to have a single moon, S/2007 (60621) 1.[5]

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.[6] That means that for every five orbits that Neptune completes, 2000 FE8 makes only two.[5] 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.[7] The moon orbits at 1180 kilometres away from 2000 FE8, completing one orbit every week.[2] It is thought to be 115 km[2] 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  \scriptstyle{\mathrm{tan}\left(\frac{\theta}{2}\right) = \frac{\mathrm{radius~of~moon}}{\mathrm{distance~from~surface~of~asteroid~to~center~of~moon}}}.

References[edit]

  1. ^ a b c d "(60621) 2000 FE 8 orbit diagram". JPL Small-Body Database. Jet Propulsion Laboratory. SPK-ID: 2060621. 
  2. ^ a b c d e Johnston, W. R. (26 November 2008). "(60621) 200 FE8". Johnston's Archive. Retrieved 2013-10-01. 
  3. ^ "List Of Centaurs and Scattered-Disk Objects (by semimajor axis)". Minor Planet Center. 4 October 2013. Retrieved 2013-10-04. 
  4. ^ 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. 
  5. ^ a b Johnston, W. R. (5 July 2013). "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved 2013-10-05. 
  6. ^ Orbit and Astrometry for 60621
  7. ^ Green, Daniel (3 March 2007). "Circular No. 8816" (PDF). Harvard. Retrieved 2013-10-05.