+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   52287 (1990 QP4) Classification: Main-belt Asteroid          SPK-ID: 2052287 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO247752 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1768304 n/a   a 2.3773424 n/a AU q 1.9569560 n/a AU i 2.46200 n/a deg node 347.77136 n/a deg peri 329.91308 n/a deg M 80.40884 n/a deg tp 2456101.4544566 (2012-Jun-22.95445660) n/a JED period 1338.8626875 3.67 n/a n/a d yr n 0.26888493 n/a deg/d Q 2.7977288 n/a AU   Orbit Determination Parameters    # obs. used (total)      503      first obs. used      1990-??-??      last obs. used      2012-12-04      # oppositions      10      planetary ephem.      DE403      condition code      0      fit RMS      0.54      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.518  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.4 mag n/a MPO247752   52287 (1990 QP4)          Discovered 1990-Aug-23 by Holt, H. E. at Palomar (675) Reference: 20030216/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1990 QP4 = 1990 QY9 = 2000 GE118  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-20 05:41 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin