+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   277189 (2005 QE31) Classification: Main-belt Asteroid          SPK-ID: 2277189 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1408567081139436 8.4981e-08   a 2.445224761764379 2.4192e-08 au q 2.100798451223547 1.9828e-07 au i 5.43038729686428 6.8666e-06 deg node 32.62442916005767 6.2909e-05 deg peri 313.291397643544 6.7142e-05 deg M 296.2118334657016 2.9632e-05 deg tp 2459247.965250448956 (2021-Feb-02.46525045) 0.00011735 TDB period 1396.614685793212 3.82 2.0726e-05 5.674e-08 d yr n .2577661567374518 3.8253e-09 deg/d Q 2.789651072305212 2.7599e-08 au   Orbit Determination Parameters    # obs. used (total)      239      data-arc span      6477 days (17.73 yr)      first obs. used      2001-07-10      last obs. used      2019-04-04      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53132      source      ORB      producer      Otto Matic      solution date      2019-Jul-14 04:51:33   Additional Information  Earth MOID = 1.09853 au   Jupiter MOID = 2.6224 au   T_jup = 3.479  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 16.8   n/a MPO433793   277189 (2005 QE31)          Discovered 2005-Aug-22 by NEAT at Palomar Reference: 20110517/Numbers.arc Last Updated: 2011-05-20 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Jul-10 19:23 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin