+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   452681 (2005 XZ39) Classification: Main-belt Asteroid          SPK-ID: 2452681 [ 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 9 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1590750207020369 5.6335e-08   a 2.243235814034867 1.7487e-08 au q 1.886393030477721 1.2525e-07 au i 1.250696401797888 8.3327e-06 deg node 16.51594574250817 0.00035199 deg peri 110.43283893435 0.00035536 deg M 84.61787892240241 4.6901e-05 deg tp 2458712.050057993290 (2019-Aug-16.55005799) 0.00015782 TDB period 1227.1872143905 3.36 1.435e-05 3.929e-08 d yr n .2933537733921054 3.4303e-09 deg/d Q 2.600078597592014 2.0269e-08 au   Orbit Determination Parameters    # obs. used (total)      77      data-arc span      6258 days (17.13 yr)      first obs. used      2003-03-11      last obs. used      2020-04-28      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .59542      source      ORB      producer      Otto Matic      solution date      2020-May-22 04:00:15   Additional Information  Earth MOID = .902015 au   Jupiter MOID = 2.45222 au   T_jup = 3.616  [ 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 18.8   n/a MPO460668   452681 (2005 XZ39)          Discovered 2005-Dec-05 by Mt. Lemmon Survey at Mount Lemmon Reference: Last Updated: 2016-01-04 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Aug-09 21:06 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin