Girish Mahajan (Editor)

(85640) 1998 OX4

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Discovered by  Spacewatch
MPC designation  (85640) 1998 OX4
Observation arc  3656 days (10.01 yr)
Inclination  4.5134807°
Asteroid group  Apollo asteroid
Discovery date  26 July 1998
Alternative names  MPO 267962
Discovered  26 July 1998
Argument of perihelion  117.10906°
Discoverer  Spacewatch
Minor planet category  Apollo NEO, PHA Mars crosser
Discovery site  Kitt Peak National Observatory
Similar  (153814) 2001 WN5, (35396) 1997 XF11, 69230 Hermes, (144898) 2004 VD17, (137108) 1999 AN10

(85640) 1998 OX4, also written 1998 OX4, is an Apollo asteroid and a Mars crosser. It was discovered on July 26, 1998, by the Spacewatch program and subsequently lost. It was re-discovered by the Near-Earth Asteroid Tracking (NEAT) project on August 31, 2002, as 2002 PJ34. It was removed from the Sentry Risk Table on 8 August 2002. It has a well determined orbit with an observation arc of more than 10 years. It is included in the Minor Planet Center list of Potentially Hazardous Asteroids (PHAs) as it comes to within 0.05 AU of Earth periodically.


(85640) 1998 OX4 Wikipedia