2002 AT4

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2002 AT4
Discovery[1]
Discovered by Lincoln Laboratory Near-Earth Asteroid Research (LINEAR) Team
Discovery site Socorro
Discovery date January 08, 2002
Designations
amor
Orbital characteristics[2]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc 1805 days (4.94 yr)
Aphelion 2.7006668 AU (404.01400 Gm)
Perihelion 1.03349733 AU (154.609000 Gm)
1.8670820 AU (279.31149 Gm)
Eccentricity 0.44646389
2.55 yr (931.84 d)
156.73908°
0° 23m 10.79s /day
Inclination 1.5005220°
323.50911°
203.02201°
Earth MOID 0.0422244 AU (6.31668 Gm)
Jupiter MOID 2.28286 AU (341.511 Gm)
Physical characteristics
Dimensions Diameter: 170-380 m
21.2

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[3] 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,[4] 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.[1]

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