+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   9036 (1990 SJ16) Classification: Main-belt Asteroid          SPK-ID: 2009036 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO253427 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.2219911 n/a   a 3.0947615 n/a AU q 2.4077520 n/a AU i 5.16723 n/a deg node 296.94300 n/a deg peri 75.28958 n/a deg M 27.67162 n/a deg tp 2456247.6479404 (2012-Nov-16.14794040) n/a JED period 1988.5623418 5.44 n/a n/a d yr n 0.18103531 n/a deg/d Q 3.7817710 n/a AU   Orbit Determination Parameters    # obs. used (total)      589      first obs. used      1952-??-??      last obs. used      2013-02-06      # oppositions      16      planetary ephem.      DE403      condition code      0      fit RMS      0.57      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.179  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 12.6 mag n/a PDS3 (MPC 32182)   9036 (1990 SJ16)          Discovered 1990-Sep-17 by Holt, H. E. at Palomar (675) Reference: 19980808/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1990 SJ16 = 1952 QH = 1974 SC3 = 1990 RA17  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-18 17:18 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin