+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   312043 (2007 RQ219) Classification: Main-belt Asteroid          SPK-ID: 2312043 [ 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 .227960804847833 6.1171e-08   a 2.411565222651693 2.4176e-08 au q 1.86182287355297 1.6111e-07 au i 1.501380694055113 9.1869e-06 deg node 296.6268199357659 0.00017373 deg peri 87.26493004865218 0.00017958 deg M 128.8101269878261 4.2333e-05 deg tp 2458511.065642500291 (2019-Jan-27.56564250) 0.00015474 TDB period 1367.876678799856 3.75 2.0569e-05 5.631e-08 d yr n .2631816197903571 3.9575e-09 deg/d Q 2.961307571750417 2.9687e-08 au   Orbit Determination Parameters    # obs. used (total)      171      data-arc span      6049 days (16.56 yr)      first obs. used      2003-07-05      last obs. used      2020-01-26      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55408      source      ORB      producer      Otto Matic      solution date      2020-Feb-25 18:43:20   Additional Information  Earth MOID = .866176 au   Jupiter MOID = 2.50091 au   T_jup = 3.483  [ 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 17.5   n/a MPO455299   312043 (2007 RQ219)          Discovered 2007-Sep-14 by Mt. Lemmon Survey at Mount Lemmon Reference: 20120109/Numbers.arc Last Updated: 2012-01-11 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Aug-08 13:28 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin