|Discovered by||Lincoln Laboratory Near-Earth Asteroid Research (LINEAR) Team|
|Discovery date||January 08, 2002|
|Minor planet category||amor|
± 1.5365e-07 AU
± 6.2285e-08 AU
± 1.0615e-07 AU
|Orbital period||931.14336 ± 7.9447e-05 d
2.55 ± 2.175e-07 year
|Longitude of ascending node||323.69218
|Argument of perihelion||202.75806
|Dimensions||Diameter: 170-380 m|
|Absolute magnitude (H)||20.897|
2002 AT4 (also written 2002 AT4) is an as yet unnamed and un-numbered near-Earth asteroid. It is approximately 160–370 metres in diameter. It has an eccentric orbit that brings it sometimes close to Earth's orbit, and sometimes halfway between Mars and Jupiter. It is a D-type asteroid which means that it may be reddish in colour, and it orbits amongst the amor family of asteroids.
Due to its relatively low transfer cost of ~5.5 km/s, 2002 AT4 was under consideration by the European Space Agency as a candidate target for the Don Quijote mission to study the effects of impacting a spacecraft into an asteroid; however, it is no longer under consideration.
- "EARN Database: 2002 AT4".
- 2002 AT4 at the JPL Small-Body Database
- Binzel, Richard P.; et al. (August 2004). "Observed spectral properties of near-Earth objects: results for population distribution, source regions, and space weathering processes". Icarus 170 (2): 259. Bibcode:2004Icar..170..259B. doi:10.1016/j.icarus.2004.04.004. Archived from the original on 2009-05-14. Retrieved 2009-04-20.
- "NEA delta_v for spacecraft rendezvous missions".