+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   160185 (2001 XF117) Classification: Main-belt Asteroid          SPK-ID: 2160185 [ 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 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .102311858734221 3.3209e-08   a 2.312879945369819 9.3534e-09 au q 2.076244899129929 7.7962e-08 au i 6.298866374628147 4.8494e-06 deg node 327.8462169103227 3.2207e-05 deg peri 75.01655581911128 4.0312e-05 deg M 140.8900083601496 2.3553e-05 deg tp 2458497.687857891442 (2019-Jan-14.18785789) 8.3549e-05 TDB period 1284.777914814007 3.52 7.7936e-06 2.134e-08 d yr n .2802040693952278 1.6997e-09 deg/d Q 2.549514991609708 1.031e-08 au   Orbit Determination Parameters    # obs. used (total)      717      data-arc span      6738 days (18.45 yr)      first obs. used      2001-11-12      last obs. used      2020-04-24      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .54815      source      ORB      producer      Otto Matic      solution date      2020-May-21 01:31:09   Additional Information  Earth MOID = 1.09475 au   Jupiter MOID = 2.77707 au   T_jup = 3.568  [ 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 15.9   n/a MPO260165   160185 (2001 XF117)          Discovered 2001-Dec-13 by LINEAR at Socorro Reference: 20070730/Numbers.arc Last Updated: 2007-08-06 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Aug-05 08:27 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin