+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   58555 (1997 HA3) Classification: Main-belt Asteroid          SPK-ID: 2058555 [ 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 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1963376793676538 3.7522e-08   a 2.283731553650584 9.0974e-09 au q 1.835349000108142 8.7795e-08 au i 5.526177698405235 4.729e-06 deg node 203.0626149677272 4.4788e-05 deg peri 262.1258924235564 4.6468e-05 deg M 319.9350661866511 1.3137e-05 deg tp 2459140.790393835828 (2020-Oct-18.29039384) 4.6356e-05 TDB period 1260.56720862648 3.45 7.5323e-06 2.062e-08 d yr n .2855857248517973 1.7065e-09 deg/d Q 2.732114107193027 1.0884e-08 au   Orbit Determination Parameters    # obs. used (total)      505      data-arc span      10223 days (27.99 yr)      first obs. used      1992-11-19      last obs. used      2020-11-15      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57534      source      ORB      producer      Otto Matic      solution date      2020-Dec-17 21:40:32   Additional Information  Earth MOID = .861791 au   Jupiter MOID = 2.43552 au   T_jup = 3.572  [ 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 16.3   n/a MPO449377   58555 (1997 HA3)          Discovered 1997-Apr-30 by Spacewatch at Kitt Peak Reference: 20030614/Numbers.arc Last Updated: 2004-04-19 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-20 18:08 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin