+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   120638 (1996 JC13) Classification: Main-belt Asteroid          SPK-ID: 2120638 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08865886595364672 3.7799e-08   a 2.344981393082969 1.194e-08 au q 2.13707800208983 9.3844e-08 au i 4.59182584464484 4.1796e-06 deg node 145.2441963043852 6.3371e-05 deg peri 331.563286640615 7.1033e-05 deg M 342.2531178009002 3.1303e-05 deg tp 2459065.158718694118 (2020-Aug-03.65871869) 0.0001141 TDB period 1311.618484235123 3.59 1.0017e-05 2.743e-08 d yr n .2744700569006815 2.0962e-09 deg/d Q 2.552884784076107 1.2998e-08 au   Orbit Determination Parameters    # obs. used (total)      377      data-arc span      8661 days (23.71 yr)      first obs. used      1996-05-11      last obs. used      2020-01-27      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .59845      source      ORB      producer      Otto Matic      solution date      2020-Feb-24 06:21:33   Additional Information  Earth MOID = 1.15444 au   Jupiter MOID = 2.50082 au   T_jup = 3.552  [ 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 16.8   n/a MPO502802   120638 (1996 JC13)          Discovered 1996-May-11 by Spacewatch at Kitt Peak Reference: 20060314/Numbers.arc Last Updated: 2006-03-23 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Oct-25 22:01 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin