+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 22 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1023637255617963 3.3206e-08   a 2.312733909844633 9.3037e-09 au q 2.075993850599837 7.7941e-08 au i 6.2989186237929 4.8424e-06 deg node 327.8464844003231 3.2174e-05 deg peri 74.95701593974553 4.0251e-05 deg M 197.0039787806563 2.3579e-05 deg tp 2459782.149597136289 (2022-Jul-21.64959714) 8.4934e-05 TDB period 1284.656235180629 3.52 7.7519e-06 2.122e-08 d yr n .2802306096691948 1.691e-09 deg/d Q 2.549473969089429 1.0256e-08 au   Orbit Determination Parameters    # obs. used (total)      721      data-arc span      6767 days (18.53 yr)      first obs. used      2001-11-12      last obs. used      2020-05-23      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .54695      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 12:30:05   Additional Information  Earth MOID = 1.09345 au   Jupiter MOID = 2.77725 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 15.98   n/a E2021B55   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 ] 2021-Apr-13 14:58 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin