+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   52893 (1998 SD63) Classification: Main-belt Asteroid          SPK-ID: 2052893 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO257216 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.0941382 n/a   a 2.3394308 n/a AU q 2.1192010 n/a AU i 6.56262 n/a deg node 225.55052 n/a deg peri 213.82711 n/a deg M 355.03352 n/a deg tp 2456418.5305892 (2013-May-06.03058920) n/a JED period 1306.9643118 3.58 n/a n/a d yr n 0.27544746 n/a deg/d Q 2.5596606 n/a AU   Orbit Determination Parameters    # obs. used (total)      513      first obs. used      1998-??-??      last obs. used      2013-03-02      # oppositions      11      planetary ephem.      DE403      condition code      0      fit RMS      0.55      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.551  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.6 mag n/a MPO257216   52893 (1998 SD63)          Discovered 1998-Sep-25 by BAO Schmidt CCD Asteroid Program at Xinglong (327) Reference: 20030216/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1998 SD63 = 2000 HJ46  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-26 04:19 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin