+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   5503 (1985 CE2) Classification: Main-belt Asteroid          SPK-ID: 2005503 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO256904 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1001794 n/a   a 2.5489072 n/a AU q 2.2935592 n/a AU i 5.43690 n/a deg node 160.58299 n/a deg peri 325.10701 n/a deg M 358.96521 n/a deg tp 2456404.7724715 (2013-Apr-22.27247150) n/a JED period 1486.3786403 4.07 n/a n/a d yr n 0.24219939 n/a deg/d Q 2.8042552 n/a AU   Orbit Determination Parameters    # obs. used (total)      1118      first obs. used      1985-??-??      last obs. used      2013-03-08      # oppositions      17      planetary ephem.      DE403      condition code      0      fit RMS      0.55      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.428  [ 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 21913)   5503 (1985 CE2)          Discovered 1985-Feb-13 by Debehogne, H. at La Silla (809) Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1985 CE2 = 1987 SC7  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-19 08:50 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin