+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   37718 (1996 SR4) Classification: Main-belt Asteroid          SPK-ID: 2037718 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: JPL 1 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1757009895091669 8.3178e-08   a 2.361952803409068 3.1685e-08 AU q 1.946955358676144 1.9422e-07 AU i 5.219784212293527 1.1097e-05 deg node 16.0194668146261 7.8746e-05 deg peri 308.4244316551187 8.5618e-05 deg M 240.3037209645482 4.3675e-05 deg tp 2456841.342441390165 (2014-Jul-02.84244139) 0.00016736 JED period 1325.883145067982 3.63 2.6679e-05 7.304e-08 d yr n .2715171403597122 5.4635e-09 deg/d Q 2.776950248141992 3.7252e-08 AU   Orbit Determination Parameters    # obs. used (total)      422      data-arc span      8090 days (22.15 yr)      first obs. used      1991-02-22      last obs. used      2013-04-17      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .5844      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 15:25:58   Additional Information  Earth MOID = .940194 AU   T_jup = 3.524  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.7 mag n/a PDS3 (MPO 26255)   37718 (1996 SR4)          Discovered 1996-Sep-20 by BAO Schmidt CCD Asteroid Program at Xinglong (327) Reference: 20020328/Numbers.arc Last Updated: 2004-04-19 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-25 19:28 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin