+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 23 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1105799424291925 3.1968e-08   a 2.642661090234364 1.6332e-08 au q 2.350435779016381 8.799e-08 au i 14.80876361228944 5.0121e-06 deg node 175.3034595008127 1.3889e-05 deg peri 85.0051078147828 2.6546e-05 deg M 329.0270080640458 2.3524e-05 deg tp 2459335.502338399930 (2021-May-01.00233840) 0.00010285 TDB period 1569.136166259669 4.30 1.4546e-05 3.982e-08 d yr n .2294255959048651 2.1268e-09 deg/d Q 2.934886401452347 1.8138e-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 = 1.39121 au   Jupiter MOID = 2.2031 au   T_jup = 3.339  [ 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 15.64   n/a E2021B55   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 ] 2021-Mar-07 07:40 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin