(152680) 1998 KJ9
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(152680) 1998 KJ9 is a sub-kilometer asteroid, classified as near-Earth object and potentially hazardous asteroid of the Apollo group.[2] Based on absolute magnitude, it is the third largest asteroid known to have passed closer than the Moon.[5]
Quick Facts Discovery, Discovered by ...
Discovery[1] | |
---|---|
Discovered by | LINEAR (704) 1.0-m Reflector |
Discovery site | Lincoln Lab's ETS |
Discovery date | 27 May 1998 |
Designations | |
(152680) 1998 KJ9 | |
NEO · PHA · Apollo[2] | |
Orbital characteristics[2] | |
Epoch 13 January 2016 (JD 2457400.5) | |
Uncertainty parameter 0 | |
Observation arc | 7706 days (21.10 yr) |
Aphelion | 2.3742 AU (355.18 Gm) (Q) |
Perihelion | 0.52125 AU (77.978 Gm) (q) |
1.4477 AU (216.57 Gm) (a) | |
Eccentricity | 0.63995 (e) |
1.74 yr (636.25 d) | |
6.2670° (M) | |
0° 33m 56.952s / day (n) | |
Inclination | 10.932° (i) |
98.675° (Ω) | |
259.95° (ω) | |
Earth MOID | 0.00552 AU (826,000 km) |
Physical characteristics | |
Dimensions | ~500 meters[3] |
Mass | 7.87×1010 kg[4] |
19.4[2] | |
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