+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   5151 Weerstra (2160 T-2) Classification: Main-belt Asteroid          SPK-ID: 2005151 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO169571 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.2031530 n/a   a 3.1902900 n/a AU q 2.5421730 n/a AU i 0.95146 n/a deg node 47.74136 n/a deg peri 8.46978 n/a deg M 285.41296 n/a deg tp 2456831.7256035 (2014-Jun-23.22560350) n/a JED period 2081.3430490 5.70 n/a n/a d yr n 0.17296524 n/a deg/d Q 3.8384070 n/a AU   Orbit Determination Parameters    # obs. used (total)      618      first obs. used      1962-??-??      last obs. used      2009-12-15      # oppositions      16      planetary ephem.      DE403      condition code      0      fit RMS      0.60      data source      MPC:mpn      producer      MPCAPO   Additional Information  T_jup = 3.164  [ 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 28113)   5151 Weerstra (2160 T-2)          Discovered 1973-Sep-29 by van Houten and Gehrels at Palomar (675) Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  2160 T-2 = 1962 WB2 = 1979 WA6 = 1985 VL3 = 1987 GH = 1990 QW8  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-23 09:38 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin