+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   100920 (1998 KT56) Classification: Main-belt Asteroid          SPK-ID: 2100920 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 16 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1563608442778528 4.3225e-08   a 2.282346384606658 8.9915e-09 au q 1.925476776975056 9.762e-08 au i 6.080166811094223 4.7297e-06 deg node 79.5961311509637 4.6343e-05 deg peri 195.9391088681377 4.8837e-05 deg M 160.3229855002325 1.5451e-05 deg tp 2458639.627621570109 (2019-Jun-05.12762157) 5.3645e-05 TDB period 1259.420510444949 3.45 7.4424e-06 2.038e-08 d yr n .2858457497034198 1.6892e-09 deg/d Q 2.63921599223826 1.0397e-08 au   Orbit Determination Parameters    # obs. used (total)      514      data-arc span      8298 days (22.72 yr)      first obs. used      1998-04-21      last obs. used      2021-01-08      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .62373      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 08:26:30   Additional Information  Earth MOID = .908139 au   Jupiter MOID = 2.46584 au   T_jup = 3.581  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 16.3   n/a MPO493566   100920 (1998 KT56)          Discovered 1998-May-23 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Mar-03 02:05 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin