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] | |
(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]
MPEC1998-K31
was invoked but never defined (see the help page).jpldata
was invoked but never defined (see the help page).Chronology
was invoked but never defined (see the help page).SmallBodies
was invoked but never defined (see the help page).CNEOS
was invoked but never defined (see the help page).