2005 HC4

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2005 HC4
Discovery[1]
Discovered by LONEOS
Discovery date 2005-04-30
Designations
Minor planet category Mercury Crosser,
Venus Crosser,
Apollo Asteroid,
Mars Crosser
Orbital characteristics[2]
Epoch 2453493.5 (2005-May-3.0)
Aphelion 3.57 AU
Perihelion 0.071 AU
1.82 AU
Eccentricity 0.9612
900 d (2.46 a)
341.4°
Inclination 8.40°
63.8°
309.0°
Physical characteristics
Dimensions 210-480 m [3]
20.7

2005 HC4 is the asteroid with the smallest known perihelion of any known object orbiting the Sun. Its extreme orbital eccentricity brings it within 0.071 AU of the Sun (23% of Mercury's perihelion) and as far as 3.562 AU from the Sun (well beyond the orbit of Mars).

See also[edit]

References[edit]

  1. ^ "MPEC 2005-J02 : 2005 HC4". IAU Minor Planet Center. 2005-05-01. Retrieved 2014-03-05.  (K05H04C)
  2. ^ "JPL Small-Body Database Browser: (2005 HC4)" (2005-05-11 last obs (arc=11 days)). Jet Propulsion Laboratory. Retrieved 2014-03-05. 
  3. ^ "NEODyS 2005 HC4". Near Earth Objects - Dynamic Site. Retrieved 2014-03-07.