+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   120337 (2004 PN56) Classification: Main-belt Asteroid          SPK-ID: 2120337 [ 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 .1106154183451654 3.1975e-08   a 2.643092938816808 1.6384e-08 au q 2.350726107664434 8.8021e-08 au i 14.80775272685284 5.0118e-06 deg node 175.3027524119499 1.389e-05 deg peri 84.91984413076162 2.6533e-05 deg M 283.2282981486852 2.3403e-05 deg tp 2459335.207732617222 (2021-Apr-30.70773262) 0.0001028 TDB period 1569.520810878526 4.30 1.4594e-05 3.996e-08 d yr n .2293693702592532 2.1327e-09 deg/d Q 2.935459769969182 1.8196e-08 au   Orbit Determination Parameters    # obs. used (total)      564      data-arc span      7169 days (19.63 yr)      first obs. used      2000-08-31      last obs. used      2020-04-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52365      source      ORB      producer      Otto Matic      solution date      2020-May-20 20:36:49   Additional Information  Earth MOID = 1.39298 au   Jupiter MOID = 2.20337 au   T_jup = 3.338  [ 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 MPO366574   120337 (2004 PN56)          Discovered 2004-Aug-09 by LINEAR at Socorro Reference: 20051116/Numbers.arc Last Updated: 2005-11-21 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Oct-30 17:58 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin