Discovered by LONEOS Aphelion 3.5707 AU (534.17 Gm) Orbital period 898 days Inclination 8.3967° Asteroid group Apollo asteroid | Discovery date 2005-04-30 Semi-major axis 1.8207 AU (272.37 Gm) Discovered 30 April 2005 Discovery site Lowell Observatory | |
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Perihelion 0.070657 AU (10.5701 Gm) Discoverer Lowell Observatory Near-Earth-Object Search Similar (66063) 1998 RO1, 69230 Hermes, 2063 Bacchus, 2101 Adonis, (66391) 1999 KW4 | ||
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).
References
2005 HC4 Wikipedia(Text) CC BY-SA