+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   5243 Clasien (1246 T-2) Classification: Main-belt Asteroid          SPK-ID: 2005243 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO256902 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1786477 n/a   a 2.7742566 n/a AU q 2.2786420 n/a AU i 7.48847 n/a deg node 194.45554 n/a deg peri 61.35859 n/a deg M 283.92938 n/a deg tp 2456757.1422901 (2014-Apr-09.64229010) n/a JED period 1687.7899043 4.62 n/a n/a d yr n 0.21329669 n/a deg/d Q 3.2698712 n/a AU   Orbit Determination Parameters    # obs. used (total)      1077      first obs. used      1953-??-??      last obs. used      2013-03-15      # oppositions      19      planetary ephem.      DE403      condition code      0      fit RMS      0.56      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.300  [ 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 28113)   SMASSII spectral type spec_B C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002) 5243 Clasien (1246 T-2)          Discovered 1973-Sep-29 by van Houten and Gehrels at Palomar (675) Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1246 T-2 = 1972 HY = 1981 GT  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-21 19:43 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin