+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   390571 (2001 HA11) Classification: Main-belt Asteroid          SPK-ID: 2390571 [ 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 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2347462310065963 8.5135e-08   a 2.211357059725163 1.4655e-08 au q 1.692249324544853 1.9188e-07 au i 7.716349514257574 9.2623e-06 deg node 33.32278502758024 6.2431e-05 deg peri 190.7698036899337 6.6966e-05 deg M 285.3551947881907 2.9821e-05 deg tp 2459249.548438690625 (2021-Feb-04.04843869) 0.00010131 TDB period 1201.120930977264 3.29 1.194e-05 3.269e-08 d yr n .2997200287793622 2.9794e-09 deg/d Q 2.730464794905474 1.8095e-08 au   Orbit Determination Parameters    # obs. used (total)      100      data-arc span      6361 days (17.42 yr)      first obs. used      2001-04-16      last obs. used      2018-09-15      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .65777      source      ORB      producer      Otto Matic      solution date      2018-Oct-03 13:04:37   Additional Information  Earth MOID = .684383 au   Jupiter MOID = 2.25271 au   T_jup = 3.609  [ 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 18.1   n/a MPO455775   390571 (2001 HA11)          Discovered 2001-Apr-17 by LINEAR at Socorro Reference: Last Updated: 2014-04-17 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-22 04:56 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin