+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   9877 (1993 ST3) Classification: Main-belt Asteroid          SPK-ID: 2009877 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO256937 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.2335333 n/a   a 2.7014892 n/a AU q 2.0706015 n/a AU i 7.75187 n/a deg node 43.84923 n/a deg peri 317.80809 n/a deg M 144.63753 n/a deg tp 2455748.8989663 (2011-Jul-06.39896630) n/a JED period 1621.8223039 4.44 n/a n/a d yr n 0.22197253 n/a deg/d Q 3.3323769 n/a AU   Orbit Determination Parameters    # obs. used (total)      976      first obs. used      1922-??-??      last obs. used      2013-03-16      # oppositions      17      planetary ephem.      DE403      condition code      0      fit RMS      0.54      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.315  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.1 mag n/a PDS3 (MPC 33463)   9877 (1993 ST3)          Discovered 1993-Sep-18 by Holt, H. E. at Palomar (675) Reference: 19990106/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1993 ST3 = 1989 YY5 = 1991 ES = 1992 JE3 = A922 VB  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-25 07:15 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin