+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   259146 (2002 XF84) Classification: Mars-crossing Asteroid          SPK-ID: 2259146 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .3909238138473326 7.1582e-08   a 2.620904908995235 8.9504e-09 au q 1.596330766239621 1.8703e-07 au i 28.37539903008166 9.4561e-06 deg node 46.87705793745196 1.4438e-05 deg peri 102.6657901625675 2.159e-05 deg M 75.91685385572792 8.9632e-06 deg tp 2458873.678194956937 (2020-Jan-25.17819496) 3.8569e-05 TDB period 1549.798810671152 4.24 7.9389e-06 2.174e-08 d yr n .2322882154259102 1.1899e-09 deg/d Q 3.645479051750848 1.2449e-08 au   Orbit Determination Parameters    # obs. used (total)      588      data-arc span      9661 days (26.45 yr)      first obs. used      1993-12-13      last obs. used      2020-05-26      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .44385      source      ORB      producer      Otto Matic      solution date      2020-Nov-11 23:12:06   Additional Information  Earth MOID = .801721 au   Jupiter MOID = 2.07635 au   T_jup = 3.135  [ hide covariance matrix ] Orbital Elements at Epoch 2457940.5 (2017-Jul-06.0) TDB Reference: JPL 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .3916478882117523 7.155e-08   q 1.593746574905441 1.871e-07 au tp 2457324.573947161155 (2015-Oct-29.07394716) 3.9475e-05 TDB node 46.88581248795537 1.4441e-05 deg peri 102.6619487411193 2.1559e-05 deg i 28.38289899536192 9.4573e-06 deg   Orbit Determination Parameters    # obs. used (total)      588      data-arc span      9661 days (26.45 yr)      first obs. used      1993-12-13      last obs. used      2020-05-26      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .44385      source      ORB      producer      Otto Matic      solution date      2020-Nov-11 23:12:06   Additional Information  Jupiter MOID = 2.07635 au   T_jup = 3.135  Orbit Covariance (6×6)   e q tp node peri i e 5.11945339788203E-15 -1.338107492543448E-14 1.150548635581528E-12 5.444430648659177E-14 1.919607445474078E-13 -2.595989394044171E-13 q -1.338107492543448E-14 3.500457915660416E-14 -3.065851562000563E-12 -1.431276443818438E-13 -5.168358257485707E-13 6.828584343031767E-13 tp 1.150548635581528E-12 -3.065851562000563E-12 1.558252618320451E-9 1.043074685519355E-11 6.341934670766362E-10 -1.004427204377627E-10 node 5.444430648659177E-14 -1.431276443818438E-13 1.043074685519355E-11 2.085449170924293E-10 -1.842530196174835E-10 -7.677063217740804E-11 peri 1.919607445474078E-13 -5.168358257485707E-13 6.341934670766362E-10 -1.842530196174835E-10 4.647762743007018E-10 3.967897068149622E-11 i -2.595989394044171E-13 6.828584343031767E-13 -1.004427204377627E-10 -7.677063217740804E-11 3.967897068149622E-11 8.944001528136748E-11 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 16.44   n/a E2021B55   259146 (2002 XF84)          Discovered 2002-Dec-13 by LINEAR at Socorro Reference: 20110119/Numbers.arc Last Updated: 2011-01-25 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-04 03:10 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin