+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   190903 (2001 UN73) Classification: Main-belt Asteroid          SPK-ID: 2190903 [ 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 12 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1966355650179463 3.7957e-08   a 2.390062346798034 9.6497e-09 au q 1.920091086807284 9.245e-08 au i 2.33160190185585 5.8572e-06 deg node 164.9117435170044 0.0001097 deg peri 244.2426093645298 0.0001113 deg M 55.56303325707513 1.9973e-05 deg tp 2458992.196907519082 (2020-May-22.69690752) 7.407e-05 TDB period 1349.622381956292 3.70 8.1735e-06 2.238e-08 d yr n .2667412787554517 1.6154e-09 deg/d Q 2.860033606788785 1.1547e-08 au   Orbit Determination Parameters    # obs. used (total)      324      data-arc span      11073 days (30.32 yr)      first obs. used      1990-11-18      last obs. used      2021-03-13      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .6431      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 22:09:35   Additional Information  Earth MOID = .930789 au   Jupiter MOID = 2.52157 au   T_jup = 3.505  [ 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 16.9   n/a MPO446127   190903 (2001 UN73)          Discovered 2001-Oct-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-20 20:35 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin