+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   190959 (2001 WX9) Classification: Main-belt Asteroid          SPK-ID: 2190959 [ 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 8 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2864914013206626 4.5706e-08   a 2.380663212991089 1.1432e-08 au q 1.698623673028721 1.134e-07 au i 3.427466052118932 8.3504e-06 deg node 150.3212819493038 7.6314e-05 deg peri 240.8929790980773 7.8513e-05 deg M 88.38835362785156 1.6568e-05 deg tp 2458871.089140426024 (2020-Jan-22.58914043) 6.0534e-05 TDB period 1341.668948218351 3.67 9.6644e-06 2.646e-08 d yr n .2683225250745025 1.9328e-09 deg/d Q 3.062702752953456 1.4708e-08 au   Orbit Determination Parameters    # obs. used (total)      339      data-arc span      7053 days (19.31 yr)      first obs. used      2001-09-26      last obs. used      2021-01-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5606      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 12:03:48   Additional Information  Earth MOID = .706257 au   Jupiter MOID = 2.38646 au   T_jup = 3.479  [ 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 17.0   n/a MPO494056   190959 (2001 WX9)          Discovered 2001-Nov-17 by LINEAR at Socorro Reference: 20080917/Numbers.arc Last Updated: 2008-09-19 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-14 03:28 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin