+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   410223 (2007 RB321) Classification: Main-belt Asteroid          SPK-ID: 2410223 [ 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 16 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1819919310167579 1.0881e-07   a 2.320857849782454 2.7286e-08 au q 1.898480448085145 2.5857e-07 au i 7.941939995661568 1.0949e-05 deg node 177.7926785122244 3.9633e-05 deg peri 205.888787007502 4.7062e-05 deg M 192.9766289795874 3.2325e-05 deg tp 2459599.664374123776 (2022-Jan-20.16437412) 0.00012349 TDB period 1291.431093545572 3.54 2.2775e-05 6.235e-08 d yr n .2787605175368935 4.916e-09 deg/d Q 2.743235251479764 3.2252e-08 au   Orbit Determination Parameters    # obs. used (total)      94      data-arc span      7168 days (19.62 yr)      first obs. used      2000-09-03      last obs. used      2020-04-19      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .65659      source      ORB      producer      Otto Matic      solution date      2020-May-22 01:59:06   Additional Information  Earth MOID = .904577 au   Jupiter MOID = 2.71787 au   T_jup = 3.543  [ 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 17.8   n/a MPO413448   410223 (2007 RB321)          Discovered 2007-Sep-13 by LINEAR at Socorro Reference: Last Updated: 2014-10-09 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-25 07:46 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin