+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   214890 (2007 RG291) Classification: Main-belt Asteroid          SPK-ID: 2214890 [ 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 15 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1460129749523909 4.0691e-08   a 2.376187498251912 1.3197e-08 au q 2.029233292587472 9.4341e-08 au i 1.41197294899801 3.4743e-06 deg node 258.2591780828985 0.00019823 deg peri 311.7922965051287 0.00019894 deg M 9.39759797794216 1.4788e-05 deg tp 2458965.575206388804 (2020-Apr-26.07520639) 5.508e-05 TDB period 1337.887163245468 3.66 1.1146e-05 3.052e-08 d yr n .2690809882103258 2.2417e-09 deg/d Q 2.723141703916353 1.5124e-08 au   Orbit Determination Parameters    # obs. used (total)      361      data-arc span      9065 days (24.82 yr)      first obs. used      1995-07-02      last obs. used      2020-04-26      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .59097      source      ORB      producer      Otto Matic      solution date      2020-May-21 09:12:41   Additional Information  Earth MOID = 1.02412 au   Jupiter MOID = 2.24367 au   T_jup = 3.526  [ 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 16.9   n/a MPO379708   214890 (2007 RG291)          Discovered 2007-Sep-14 by Mt. Lemmon Survey at Mount Lemmon Reference: 20090509/Numbers.arc Last Updated: 2009-05-11 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Sep-25 17:49 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin