+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   212819 (2007 UJ2) Classification: Main-belt Asteroid          SPK-ID: 2212819 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 16 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2019526599831991 4.1713e-08   a 2.348666258143269 1.2468e-08 au q 1.874346859898449 9.6192e-08 au i 8.969086127894338 4.9693e-06 deg node 152.4432729269427 2.9124e-05 deg peri 249.832352245434 3.1403e-05 deg M 168.4936492359557 1.1775e-05 deg tp 2458385.165273395162 (2018-Sep-23.66527340) 4.1533e-05 TDB period 1314.711281892458 3.60 1.0469e-05 2.866e-08 d yr n .273824378750138 2.1804e-09 deg/d Q 2.822985656388089 1.4986e-08 au   Orbit Determination Parameters    # obs. used (total)      310      data-arc span      8625 days (23.61 yr)      first obs. used      1996-09-15      last obs. used      2020-04-27      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57899      source      ORB      producer      Otto Matic      solution date      2020-May-21 08:50:22   Additional Information  Earth MOID = .903875 au   Jupiter MOID = 2.63915 au   T_jup = 3.515  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 16.9   n/a MPO418139   212819 (2007 UJ2)          Discovered 2007-Oct-18 by Lowe, A. at Mayhill Reference: 20090409/Numbers.arc Last Updated: 2009-04-10 [ hide close-approach data ] Close-Approach Data   ...sorted by Date/Time (TDB) Date/Time (TDB) Time Uncertainty (days_HH:MM) Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified 2054-Jan-06 16:50 00:02 Iris 0.0375368664678824 0.0375352846588195 0.0375384526522149 4.01490132830858 4.01490129016336 2471274.201292831 2.1866153972007 773.538409342318 44.0282968899313 85.1319281545222 127012.841649231 T 16 CATAB v2.0f-lin.ifort 2020-May-21 08:50:40 2020-May-21 08:50 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Aug-08 16:18 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin