+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   8658 (1990 RG3) Classification: Main-belt Asteroid          SPK-ID: 2008658 [ 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 .05542519627173938 6.9675e-08   a 2.87758124888559 2.7785e-08 AU q 2.718090743378229 1.9926e-07 AU i 1.801475764375627 6.0464e-06 deg node 182.9111134194273 0.00017393 deg peri 192.2923049573174 0.00018195 deg M 208.5886905344669 5.5513e-05 deg tp 2457150.386670238720 (2015-May-07.88667024) 0.00027817 JED period 1782.95268853343 4.88 2.5823e-05 7.07e-08 d yr n .2019122561777668 2.9244e-09 deg/d Q 3.03707175439295 2.9325e-08 AU   Orbit Determination Parameters    # obs. used (total)      1266      data-arc span      8256 days (22.60 yr)      first obs. used      1990-09-14      last obs. used      2013-04-22      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .5375      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 13:32:08   Additional Information  Earth MOID = 1.71802 AU   T_jup = 3.293  [ 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 12.9 mag n/a PDS3 (MPC 31677)   8658 (1990 RG3)          Discovered 1990-Sep-14 by Holt, H. E. at Palomar (675) Reference: 19980511/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1990 RG3 = 1985 RH2 = 1993 FZ48 = 1996 XX25  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-19 01:53 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin