+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   8105 (1994 WH2) Classification: Main-belt Asteroid          SPK-ID: 2008105 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: JPL 1 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08467023302786236 6.4458e-08   a 2.268822381925621 1.7083e-08 AU q 2.076720662149149 1.4526e-07 AU i 5.107262380588092 7.5777e-06 deg node 156.5445319147879 7.8031e-05 deg peri 292.8640383095145 9.4009e-05 deg M 117.0435300192394 5.1054e-05 deg tp 2455994.670059437878 (2012-Mar-08.17005944) 0.00017614 JED period 1248.243098771444 3.42 1.4098e-05 3.86e-08 d yr n .2884053597847423 3.2574e-09 deg/d Q 2.460924101702094 1.853e-08 AU   Orbit Determination Parameters    # obs. used (total)      902      data-arc span      8256 days (22.60 yr)      first obs. used      1990-09-14      last obs. used      2013-04-22      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .56858      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 13:29:37   Additional Information  Earth MOID = 1.09884 AU   T_jup = 3.604  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.0 mag n/a PDS3 (MPC 30968)   8105 (1994 WH2)          Discovered 1994-Nov-28 by Ueda, S., Kaneda, H. at Kushiro (399) Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1994 WH2 = 1987 UR2 = 1990 RC10  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-Jun-20 09:52 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin