+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   160044 (1999 RJ37) Classification: Main-belt Asteroid          SPK-ID: 2160044 [ 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 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .3267754255730339 1.4297e-07   a 2.53683132058364 1.6196e-08 au q 1.70785718619292 3.7227e-07 au i 14.60482327536492 5.4489e-06 deg node 201.2913626944081 3.6529e-05 deg peri 121.8337990902713 4.3698e-05 deg M 102.7166022494941 2.2652e-05 deg tp 2458779.410940871221 (2019-Oct-22.91094087) 8.9189e-05 TDB period 1475.828229969582 4.04 1.4133e-05 3.869e-08 d yr n .2439308265619907 2.336e-09 deg/d Q 3.365805454974361 2.1489e-08 au   Orbit Determination Parameters    # obs. used (total)      535      data-arc span      7877 days (21.57 yr)      first obs. used      1999-06-21      last obs. used      2021-01-13      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .41626      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 19:59:40   Additional Information  Earth MOID = .745175 au   Jupiter MOID = 2.22786 au   T_jup = 3.328  [ 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 15.6   n/a MPO348374   160044 (1999 RJ37)          Discovered 1999-Sep-10 by LINEAR at Socorro Reference: 20070730/Numbers.arc Last Updated: 2007-08-06 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-17 05:39 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin