+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   201623 (2003 SE253) Classification: Main-belt Asteroid          SPK-ID: 2201623 [ 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 11 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08114991983723838 5.7e-08   a 2.692445265847991 2.3885e-08 au q 2.473953548358275 1.5428e-07 au i 2.412812142091712 5.4e-06 deg node 278.8870353361961 0.00018617 deg peri 138.6423254017643 0.00019235 deg M 229.6023749833618 5.1806e-05 deg tp 2459585.001907309220 (2022-Jan-05.50190731) 0.00023673 TDB period 1613.68496247129 4.42 2.1473e-05 5.879e-08 d yr n .2230918725602273 2.9686e-09 deg/d Q 2.910936983337708 2.5823e-08 au   Orbit Determination Parameters    # obs. used (total)      190      data-arc span      5707 days (15.62 yr)      first obs. used      2003-09-17      last obs. used      2019-05-03      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57292      source      ORB      producer      Otto Matic      solution date      2020-Feb-25 00:07:47   Additional Information  Earth MOID = 1.48663 au   Jupiter MOID = 2.34021 au   T_jup = 3.365  [ 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 17.0   n/a MPO433321   201623 (2003 SE253)          Discovered 2003-Sep-27 by Spacewatch at Kitt Peak Reference: 20081212/Numbers.arc Last Updated: 2008-12-12 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-26 04:04 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin