+ View the NASA Portal + Near-Earth Object (NEO) Project Search JPL JPL Small-Body Database Browser Search: [ help ]   143052 (2002 WY2) Classification: Main-belt Asteroid          SPK-ID: 2143052 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2455200.5 (2010-Jan-04.0) TDB Reference: MPO106854 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.0927727 n/a   a 2.3442659 n/a AU q 2.1267820 n/a AU i 10.81447 n/a deg node 88.10395 n/a deg peri 166.27444 n/a deg M 162.02377 n/a deg tp 2454610.4552458 (2008-May-23.95524580) n/a JED period 1311.0182012 3.59 n/a n/a d yr n 0.27459573 n/a deg/d Q 2.5617498 n/a AU   Orbit Determination Parameters    # obs. used (total)      62      first obs. used      1997-??-??      last obs. used      2006-11-15      # oppositions      6      planetary ephem.      DE403      quality code      1      fit RMS      0.57      data source      MPC:mpu      producer      MPC   Additional Information  T_jup = 3.533  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 16.4 mag n/a MPO106854   143052 (2002 WY2)           Discovered 2002-Nov-24 by Young, J. W. at Wrightwood (673) Reference: 20061205/Numbers.arc Last Updated: 2006-12-13 Alternate Designations  2002 WY2 = 2001 MQ22  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2010-Feb-10 06:15 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin