+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1554673801432224 4.8817e-08   a 2.412402668930148 1.6815e-08 au q 2.03735274614106 1.189e-07 au i 3.528563232302988 7.3559e-06 deg node 64.43904505901679 9.015e-05 deg peri 28.22060378250935 9.3641e-05 deg M 174.8598222274584 2.6172e-05 deg tp 2458535.746459557668 (2019-Feb-21.24645956) 9.6292e-05 TDB period 1368.589259160647 3.75 1.4309e-05 3.918e-08 d yr n .2630445895949726 2.7502e-09 deg/d Q 2.787452591719236 1.9429e-08 au   Orbit Determination Parameters    # obs. used (total)      158      data-arc span      6062 days (16.60 yr)      first obs. used      2003-11-19      last obs. used      2020-06-24      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .60392      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 13:28:22   Additional Information  Earth MOID = 1.05453 au   Jupiter MOID = 2.3919 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 17.73   n/a E2021B25   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 ] 2021-Mar-04 23:29 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin