2005 HC4

From Wikipedia, the free encyclopedia
Jump to: navigation, search
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 3.56186564169403 AU
Perihelion 0.07093100018778116 AU
1.816398320940905 AU
Eccentricity 0.9609496444859966
894.1596429999979 d (2.45 a)
341.3437364226082°
Inclination 8.383916421902322°
63.82267090211183°
308.9518559397263°
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)". Jet Propulsion Laboratory. 2005-05-11 last obs (arc=11 days). Retrieved 2014-03-05. 
  3. ^ "NEODyS 2005 HC4". Near Earth Objects - Dynamic Site. Retrieved 2014-03-07.