+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   249786 (2000 WD169) Classification: Main-belt Asteroid          SPK-ID: 2249786 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 12 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .249648782741116 4.6108e-08   a 3.130717520553615 2.4761e-08 au q 2.34913770244112 1.4252e-07 au i 10.52529116600605 5.2591e-06 deg node 132.2476972101458 2.8631e-05 deg peri 319.4404759537711 3.0837e-05 deg M 208.0406233306374 1.3874e-05 deg tp 2459854.561716783510 (2022-Oct-02.06171678) 8.4435e-05 TDB period 2023.318499858342 5.54 2.4004e-05 6.572e-08 d yr n .1779255218717195 2.1109e-09 deg/d Q 3.91229733866611 3.0943e-08 au   Orbit Determination Parameters    # obs. used (total)      462      data-arc span      7154 days (19.59 yr)      first obs. used      2000-11-25      last obs. used      2020-06-27      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53602      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 00:15:17   Additional Information  Earth MOID = 1.37704 au   Jupiter MOID = 1.35391 au   T_jup = 3.139  [ hide covariance matrix ] Orbital Elements at Epoch 2457597.5 (2016-Jul-28.0) TDB Reference: JPL 12 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2532098101677752 4.7139e-08   q 2.327722198874734 1.4778e-07 au tp 2457824.031241532223 (2017-Mar-11.53124153) 6.6665e-05 TDB node 132.9860509352805 2.9187e-05 deg peri 317.1206870821169 3.1006e-05 deg i 10.4260131296963 5.2252e-06 deg   Orbit Determination Parameters    # obs. used (total)      462      data-arc span      7154 days (19.59 yr)      first obs. used      2000-11-25      last obs. used      2020-06-27      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53602      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 00:15:17   Additional Information  Jupiter MOID = 1.35391 au   T_jup = 3.139  Orbit Covariance (6×6)   e q tp node peri i e 2.222042921013992E-15 -6.917610274661707E-15 -7.451699391126362E-14 9.489480339151409E-15 -5.683482092592164E-14 -1.730743458527762E-15 q -6.917610274661707E-15 2.184030672835247E-14 9.847462564948084E-13 -3.035325425660204E-14 2.850215486140276E-13 5.639775716008391E-15 tp -7.451699391126362E-14 9.847462564948084E-13 4.444286334620568E-9 1.20331165452399E-11 7.353102078369183E-10 3.748235610800725E-13 node 9.489480339151409E-15 -3.035325425660204E-14 1.20331165452399E-11 8.518944422479745E-10 -8.355166215299161E-10 -2.413910530403323E-11 peri -5.683482092592164E-14 2.850215486140276E-13 7.353102078369183E-10 -8.355166215299161E-10 9.613632653798877E-10 2.380804091786615E-11 i -1.730743458527762E-15 5.639775716008391E-15 3.748235610800725E-13 -2.413910530403323E-11 2.380804091786615E-11 2.730260446719763E-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 15.0   n/a MPO437160   249786 (2000 WD169)          Discovered 2000-Nov-25 by LONEOS at Anderson Mesa Reference: 20100923/Numbers.arc Last Updated: 2010-09-27 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-17 07:51 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin