+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   392698 (2011 WP140) Classification: Main-belt Asteroid          SPK-ID: 2392698 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1854488202759467 6.5079e-08   a 2.777461471045811 4.2778e-08 au q 2.26238451787847 1.7746e-07 au i 8.930361343227391 7.4417e-06 deg node 67.10158023433748 3.8719e-05 deg peri 191.8808104692631 4.3062e-05 deg M 86.27399487657041 1.8356e-05 deg tp 2458595.320094244500 (2019-Apr-21.82009424) 8.3502e-05 TDB period 1690.715334101133 4.63 3.906e-05 1.069e-07 d yr n .2129276246207311 4.9192e-09 deg/d Q 3.292538424213153 5.0711e-08 au   Orbit Determination Parameters    # obs. used (total)      159      data-arc span      5563 days (15.23 yr)      first obs. used      2004-03-18      last obs. used      2019-06-11      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .62048      source      ORB      producer      Otto Matic      solution date      2020-Feb-26 04:45:37   Additional Information  Earth MOID = 1.24816 au   Jupiter MOID = 1.77346 au   T_jup = 3.292  [ hide covariance matrix ] Orbital Elements at Epoch 2457001.5 (2014-Dec-10.0) TDB Reference: JPL 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1847355499441093 6.4944e-08   q 2.265649507723982 1.7713e-07 au tp 2456905.198294416328 (2014-Sep-04.69829442) 8.454e-05 TDB node 67.12219617646396 3.8716e-05 deg peri 192.250204738455 4.312e-05 deg i 8.92940706143791 7.4411e-06 deg   Orbit Determination Parameters    # obs. used (total)      159      data-arc span      5563 days (15.23 yr)      first obs. used      2004-03-18      last obs. used      2019-06-11      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .62048      source      ORB      producer      Otto Matic      solution date      2020-Feb-26 04:45:37   Additional Information  Jupiter MOID = 1.77346 au   T_jup = 3.292  Orbit Covariance (6×6)   e q tp node peri i e 4.217761518795941E-15 -1.128383279885827E-14 -1.928745023410418E-12 -3.522330578152378E-14 -2.934775910935119E-13 5.564686905411693E-17 q -1.128383279885827E-14 3.137353326072492E-14 4.648242312328877E-12 9.701213583251121E-14 6.832812350360323E-13 1.324959124001366E-15 tp -1.928745023410418E-12 4.648242312328877E-12 7.147076565466673E-9 1.787163813958907E-11 1.627000263972842E-9 4.99343798340313E-12 node -3.522330578152378E-14 9.701213583251121E-14 1.787163813958907E-11 1.49891819980979E-9 -1.47684612827097E-9 -6.944608259239847E-11 peri -2.934775910935119E-13 6.832812350360323E-13 1.627000263972842E-9 -1.47684612827097E-9 1.859304667579252E-9 6.997949491288629E-11 i 5.564686905411693E-17 1.324959124001366E-15 4.99343798340313E-12 -6.944608259239847E-11 6.997949491288629E-11 5.53704540425757E-11 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 16.3   n/a MPO437608   392698 (2011 WP140)          Discovered 2011-Oct-20 by Mt. Lemmon Survey at Mount Lemmon Reference: Last Updated: 2014-04-17 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Jul-07 01:19 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin