+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   160341 (2003 ST103) Classification: Main-belt Asteroid          SPK-ID: 2160341 [ 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 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1091277730119631 5.4437e-08   a 2.7732062538314 1.7968e-08 au q 2.47057243124793 1.5641e-07 au i 3.379667363919491 5.2631e-06 deg node 342.3254279059475 8.0329e-05 deg peri 4.659847553260297 8.3775e-05 deg M 283.6875717993988 2.6164e-05 deg tp 2459558.072783409730 (2021-Dec-09.57278341) 0.00012367 TDB period 1686.831425270891 4.62 1.6394e-05 4.488e-08 d yr n .2134178878853807 2.0741e-09 deg/d Q 3.075840076414869 1.9929e-08 au   Orbit Determination Parameters    # obs. used (total)      562      data-arc span      7981 days (21.85 yr)      first obs. used      1998-08-17      last obs. used      2020-06-23      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55368      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 12:28:36   Additional Information  Earth MOID = 1.46177 au   Jupiter MOID = 2.31028 au   T_jup = 3.325  [ 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 15.54   n/a E2021B55   160341 (2003 ST103)          Discovered 2003-Sep-20 by LINEAR at Socorro Reference: 20070730/Numbers.arc Last Updated: 2007-08-06 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-13 15:58 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin