+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   7286 (1990 QZ4) Classification: Main-belt Asteroid          SPK-ID: 2007286 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO250281 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.2006429 n/a   a 3.1346633 n/a AU q 2.5057154 n/a AU i 15.13929 n/a deg node 137.75358 n/a deg peri 238.39172 n/a deg M 1.33461 n/a deg tp 2456392.9848674 (2013-Apr-10.48486740) n/a JED period 2027.1448206 5.55 n/a n/a d yr n 0.17758968 n/a deg/d Q 3.7636112 n/a AU   Orbit Determination Parameters    # obs. used (total)      810      first obs. used      1990-??-??      last obs. used      2012-11-22      # oppositions      18      planetary ephem.      DE403      condition code      0      fit RMS      0.49      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.128  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 11.9 mag n/a PDS3 (MPC 28286)   7286 (1990 QZ4)          Discovered 1990-Aug-24 by Holt, H. E. at Palomar (675) Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1990 QZ4 = 1991 XE3  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-22 20:42 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin