+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08865547138869101 3.6261e-08   a 2.344945225893402 1.1537e-08 au q 2.137053001511162 8.9608e-08 au i 4.592064698525845 4.1771e-06 deg node 145.2427398438726 6.2229e-05 deg peri 331.4949392414874 7.003e-05 deg M 37.20613261128641 3.1237e-05 deg tp 2459064.946882561383 (2020-Aug-03.44688256) 0.00011372 TDB period 1311.588140259951 3.59 9.6792e-06 2.65e-08 d yr n .2744764068457112 2.0256e-09 deg/d Q 2.552837450275642 1.2559e-08 au   Orbit Determination Parameters    # obs. used (total)      396      data-arc span      9014 days (24.68 yr)      first obs. used      1996-05-11      last obs. used      2021-01-14      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .59537      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 19:37:22   Additional Information  Earth MOID = 1.15434 au   Jupiter MOID = 2.50034 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 16.7   n/a MPO532523   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 ] 2021-Mar-01 16:07 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin