(152680) 1998 KJ9
| Discovery | |
|---|---|
| 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 | |
| Orbital characteristics | |
| 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 |
| Mass | 7.87×1010 kg |
| 19.4 | |
(152680) 1998 KJ9 is a sub-kilometer asteroid, classified as near-Earth object and potentially hazardous asteroid of the Apollo group. Based on absolute magnitude, it is the third largest asteroid known to have passed closer than the Moon.