+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   190731 (2001 PW14) Classification: Main-belt Asteroid          SPK-ID: 2190731 [ 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 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2124853318255921 4.2676e-08   a 2.289815684082875 8.4589e-09 au q 1.80326343863108 9.7669e-08 au i 6.718302806827536 4.88e-06 deg node 156.2851963160956 3.4681e-05 deg peri 181.3782080323499 3.6393e-05 deg M 201.8225110497878 1.1692e-05 deg tp 2459756.585270366922 (2022-Jun-26.08527037) 4.2852e-05 TDB period 1265.608011991541 3.47 7.013e-06 1.92e-08 d yr n .28444826248651 1.5762e-09 deg/d Q 2.77636792953467 1.0256e-08 au   Orbit Determination Parameters    # obs. used (total)      410      data-arc span      6754 days (18.49 yr)      first obs. used      2001-07-29      last obs. used      2020-01-25      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .56907      source      ORB      producer      Otto Matic      solution date      2020-Feb-24 21:24:07   Additional Information  Earth MOID = .792176 au   Jupiter MOID = 2.61496 au   T_jup = 3.560  [ 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 16.6   n/a MPO440057   190731 (2001 PW14)          Discovered 2001-Aug-15 by Dyvig, R. at Badlands Reference: 20080917/Numbers.arc Last Updated: 2008-09-19 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-12 04:49 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin