+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   13043 (1990 QT4) Classification: Main-belt Asteroid          SPK-ID: 2013043 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ 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 .09682173349707222 1.5632e-07   a 2.572989137763727 2.9819e-08 AU q 2.323867869176306 3.9808e-07 AU i 15.19823949434613 1.3195e-05 deg node 1.63334640592361 2.7862e-05 deg peri 47.29284971621973 7.2912e-05 deg M 115.1188102852492 6.0321e-05 deg tp 2455918.442162793713 (2011-Dec-22.94216279) 0.00025312 JED period 1507.49317999597 4.13 2.6206e-05 7.175e-08 d yr n .2388070505240776 4.1514e-09 deg/d Q 2.822110406351148 3.2706e-08 AU   Orbit Determination Parameters    # obs. used (total)      640      data-arc span      9685 days (26.52 yr)      first obs. used      1986-10-02      last obs. used      2013-04-08      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .47277      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 13:51:05   Additional Information  Earth MOID = 1.3532 AU   T_jup = 3.373  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.4 mag n/a PDS3 (MPC 37498)   13043 (1990 QT4)          Discovered 1990-Aug-24 by Holt, H. E. at Palomar (675) Reference: 20000124/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1990 QT4 = 1986 TF9 = 1993 LA1  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-25 10:58 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin