+ View the NASA Portal + Near-Earth Object (NEO) Project Search JPL JPL Small-Body Database Browser Search: [ help ]   177245 (2003 WB) Classification: Main-belt Asteroid          SPK-ID: 2177245 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2455200.5 (2010-Jan-04.0) TDB Reference: MPO132552 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1314648 n/a   a 2.6893341 n/a AU q 2.3357813 n/a AU i 14.12788 n/a deg node 46.46275 n/a deg peri 135.69126 n/a deg M 27.13649 n/a deg tp 2455079.0725933 (2009-Sep-04.57259331) n/a JED period 1610.8887488 4.41 n/a n/a d yr n 0.22347912 n/a deg/d Q 3.0428869 n/a AU   Orbit Determination Parameters    # obs. used (total)      97      first obs. used      1994-??-??      last obs. used      2008-02-10      # oppositions      5      planetary ephem.      DE403      quality code      1      fit RMS      0.58      data source      MPC:mpu      producer      MPC   Additional Information  T_jup = 3.317  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.6 mag n/a MPO132552   177245 (2003 WB)           Discovered 2003-Nov-17 by Young, J. W. at Wrightwood (673) Reference: 20080221/Numbers.arc Last Updated: 2008-02-22 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2009-Nov-23 21:10 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin