+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   187138 (2005 QW137) Classification: Main-belt Asteroid          SPK-ID: 2187138 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .05852537763962024 4.9535e-08   a 2.896826370733341 2.1049e-08 au q 2.727288513429762 1.4665e-07 au i 2.695377843424891 6.3176e-06 deg node 49.59490203306672 0.00010805 deg peri 10.08730745433037 0.00012276 deg M 335.9188556180728 5.6825e-05 deg tp 2459320.963851854003 (2021-Apr-16.46385185) 0.00028426 TDB period 1800.869011025396 4.93 1.9629e-05 5.374e-08 d yr n .1999034898129652 2.1788e-09 deg/d Q 3.066364228036921 2.2281e-08 au   Orbit Determination Parameters    # obs. used (total)      365      data-arc span      6964 days (19.07 yr)      first obs. used      2001-12-19      last obs. used      2021-01-12      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .55909      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 21:54:10   Additional Information  Earth MOID = 1.73887 au   Jupiter MOID = 2.13101 au   T_jup = 3.284  [ 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 16.1   n/a MPO440040   187138 (2005 QW137)          Discovered 2005-Aug-28 by Spacewatch at Kitt Peak Reference: 20080520/Numbers.arc Last Updated: 2008-05-22 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-17 16:50 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin