(152680) 1998 KJ9 is a near-Earth asteroid and potentially hazardous object. It has a well determined orbit with an excellent observation arc of 21 years and an Uncertainty Parameter of 0.It was discovered on 27 May 1998 by the Lincoln Near-Earth Asteroid Research (LINEAR) at an apparent magnitude of 17.6 using a 1.0-meter (39 in) reflector. It was tracked through 9 June 1998. It was recovered on 28 December 2003 which extended the observation arc by 5 years.
apoapsis (km)
3.5519e+11
mass (kg)
7870.0
orbital period (μ)
5.49102e+07
periapsis (km)
7.80258e+10
absolute magnitude
19.4
discovery date
1998-05-27
discoverer
Lincoln Near-Earth Asteroid Research, Reflecting telescope
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