+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   146273 (2001 ES22) Classification: Main-belt Asteroid          SPK-ID: 2146273 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2022685508128859 3.8978e-08   a 2.26250127067688 7.1248e-09 au q 1.804868417444755 8.6946e-08 au i 5.036880671544801 5.7775e-06 deg node 23.905392068649 3.6732e-05 deg peri 300.3903490251452 3.9003e-05 deg M 103.5758453105505 1.2039e-05 deg tp 2458642.866938750743 (2019-Jun-08.36693875) 4.1174e-05 TDB period 1243.03018395562 3.40 5.8716e-06 1.608e-08 d yr n .2896148497813573 1.368e-09 deg/d Q 2.720134123909006 8.5659e-09 au   Orbit Determination Parameters    # obs. used (total)      728      data-arc span      9416 days (25.78 yr)      first obs. used      1994-02-15      last obs. used      2019-11-27      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55678      source      ORB      producer      Otto Matic      solution date      2019-Dec-14 11:35:32   Additional Information  Earth MOID = .799537 au   Jupiter MOID = 2.623 au   T_jup = 3.586  [ 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 16.1   n/a MPO502885   146273 (2001 ES22)          Discovered 2001-Mar-15 by Spacewatch at Kitt Peak Reference: 20070106/Numbers.arc Last Updated: 2007-01-09 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Jul-05 21:24 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin