(152680) 1998 KJ9

(152680) 1998 KJ9
Discovery[1]
Discovered byLINEAR (704)
1.0-m Reflector
Discovery siteLincoln Lab's ETS
Discovery date27 May 1998
Designations
(152680) 1998 KJ9
NEO · PHA · Apollo[2]
Orbital characteristics[2]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc7706 days (21.10 yr)
Aphelion2.3742 AU (355.18 Gm) (Q)
Perihelion0.52125 AU (77.978 Gm) (q)
1.4477 AU (216.57 Gm) (a)
Eccentricity0.63995 (e)
1.74 yr (636.25 d)
6.2670° (M)
0° 33m 56.952s / day (n)
Inclination10.932° (i)
98.675° (Ω)
259.95° (ω)
Earth MOID0.00552 AU (826,000 km)
Physical characteristics
Dimensions~500 meters[3]
Mass7.87×1010 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]

  1. ^ Cite error: The named reference MPEC1998-K31 was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference jpldata was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference Chronology was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference SmallBodies was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference CNEOS was invoked but never defined (see the help page).