+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   160930 (2001 XF243) Classification: Main-belt Asteroid          SPK-ID: 2160930 [ 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 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07568704626157359 5.3199e-08   a 2.360670727831226 1.6427e-08 au q 2.181998533245521 1.2493e-07 au i 7.071332136374611 5.3113e-06 deg node 106.5236870541147 4.884e-05 deg peri 139.1319572058358 6.6074e-05 deg M 308.0083073878753 4.7459e-05 deg tp 2459391.829970554918 (2021-Jun-26.32997055) 0.00017514 TDB period 1324.803751122877 3.63 1.3828e-05 3.786e-08 d yr n .2717383610175253 2.8363e-09 deg/d Q 2.53934292241693 1.767e-08 au   Orbit Determination Parameters    # obs. used (total)      359      data-arc span      7577 days (20.74 yr)      first obs. used      1999-03-23      last obs. used      2019-12-20      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .54912      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 12:22:55   Additional Information  Earth MOID = 1.1716 au   Jupiter MOID = 2.48139 au   T_jup = 3.537  [ 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 16.1   n/a MPO454067   160930 (2001 XF243)          Discovered 2001-Dec-14 by LINEAR at Socorro Reference: 20070828/Numbers.arc Last Updated: 2007-08-30 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-12 12:40 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin