+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   413338 (2003 WQ158) Classification: Main-belt Asteroid          SPK-ID: 2413338 [ 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 .1558414405384762 4.8993e-08   a 2.411639409962094 1.7034e-08 au q 2.03580605025424 1.1941e-07 au i 3.529323603717671 7.398e-06 deg node 64.44125625920951 9.8727e-05 deg peri 28.18803944418108 0.00010215 deg M 122.2581044071222 2.6319e-05 deg tp 2458535.939647677319 (2019-Feb-21.43964768) 9.805e-05 TDB period 1367.939799551011 3.75 1.4493e-05 3.968e-08 d yr n .2631694758191553 2.7882e-09 deg/d Q 2.787472769669948 1.9688e-08 au   Orbit Determination Parameters    # obs. used (total)      142      data-arc span      6004 days (16.44 yr)      first obs. used      2003-11-19      last obs. used      2020-04-27      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .60615      source      ORB      producer      Otto Matic      solution date      2020-May-22 02:07:34   Additional Information  Earth MOID = 1.05325 au   Jupiter MOID = 2.3923 au   T_jup = 3.500  [ 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 17.5   n/a MPO413455   413338 (2003 WQ158)          Discovered 2003-Nov-28 by Spacewatch at Kitt Peak Reference: Last Updated: 2014-11-10 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Aug-05 05:44 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin