+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   10903 (1997 WA30) Classification: Main-belt Asteroid          SPK-ID: 2010903 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] [ 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 .1604667545914229 8.2092e-08   a 2.635168415650902 3.115e-08 AU q 2.21231149218958 2.1119e-07 AU i 11.753991548335 1.2015e-05 deg node 235.0035433074849 4.7815e-05 deg peri 245.8113872609132 6.4472e-05 deg M 172.9946071834134 4.5066e-05 deg tp 2455649.670969942122 (2011-Mar-29.17096994) 0.00019099 JED period 1562.467496655885 4.28 2.7705e-05 7.585e-08 d yr n .2304047929128127 4.0854e-09 deg/d Q 3.058025339112224 3.6149e-08 AU   Orbit Determination Parameters    # obs. used (total)      633      data-arc span      13327 days (36.49 yr)      first obs. used      1976-10-24      last obs. used      2013-04-20      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .63497      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 13:42:10   Additional Information  Earth MOID = 1.25728 AU   T_jup = 3.350  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.6 mag n/a PDS3 (MPC 34797)   Alternate Designations  1997 WA30 = 1976 UJ  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] 2013-May-25 21:05 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin