+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   58116 (1981 EH7) Classification: Main-belt Asteroid          SPK-ID: 2058116 [ 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 23 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09148137018156152 3.5538e-08   a 2.674811911984812 1.4968e-08 au q 2.430116453298479 9.2283e-08 au i 14.34839720425521 4.7293e-06 deg node 202.7167830852806 1.5011e-05 deg peri 240.8896144698777 3.2897e-05 deg M 70.6864331099594 2.6883e-05 deg tp 2458686.758573806064 (2019-Jul-22.25857381) 0.00011969 TDB period 1597.858435636687 4.37 1.3412e-05 3.672e-08 d yr n .2253015611214352 1.8912e-09 deg/d Q 2.919507370671145 1.6337e-08 au   Orbit Determination Parameters    # obs. used (total)      790      data-arc span      14318 days (39.20 yr)      first obs. used      1981-02-09      last obs. used      2020-04-23      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52856      source      ORB      producer      Otto Matic      solution date      2020-May-20 11:31:33   Additional Information  Earth MOID = 1.47726 au   Jupiter MOID = 2.37087 au   T_jup = 3.329  [ 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 15.5   n/a MPO313840   58116 (1981 EH7)          Discovered 1981-Mar-07 by Bus, S. J. at Siding Spring Reference: 20030614/Numbers.arc Last Updated: 2004-04-19 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-20 11:42 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin