+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   249739 (2000 SN180) Classification: Main-belt Asteroid          SPK-ID: 2249739 [ 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 16 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07780156180669659 4.9668e-08   a 3.03995523679919 3.4007e-08 au q 2.803441971553766 1.4419e-07 au i 7.499889867970521 4.173e-06 deg node 248.63699717 4.1631e-05 deg peri 137.279620987281 5.4261e-05 deg M 264.3913205032153 3.8135e-05 deg tp 2459514.654959219555 (2021-Oct-27.15495922) 0.00021061 TDB period 1935.972615595686 5.30 3.2486e-05 8.894e-08 d yr n .1859530434986191 3.1203e-09 deg/d Q 3.276468502044612 3.6653e-08 au   Orbit Determination Parameters    # obs. used (total)      357      data-arc span      6849 days (18.75 yr)      first obs. used      2000-09-28      last obs. used      2019-06-30      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .54212      source      ORB      producer      Otto Matic      solution date      2020-Feb-25 10:26:45   Additional Information  Earth MOID = 1.8141 au   Jupiter MOID = 2.12816 au   T_jup = 3.223  [ 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 15.3   n/a MPO437160   249739 (2000 SN180)          Discovered 2000-Sep-28 by LINEAR at Socorro Reference: 20100923/Numbers.arc Last Updated: 2010-09-27 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Aug-13 20:39 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin