+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   100980 (1998 QJ27) Classification: Inner Main-belt Asteroid          SPK-ID: 2100980 [ 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 28 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1194817384345472 4.8879e-08   a 1.932538738395703 6.8837e-09 au q 1.701635650340078 9.4523e-08 au i 17.86151149566297 5.1955e-06 deg node 327.3462922969672 9.3926e-06 deg peri 356.9481595101073 1.5916e-05 deg M 54.53631570446866 1.4132e-05 deg tp 2458851.846878370886 (2020-Jan-03.34687837) 3.8092e-05 TDB period 981.2750108840972 2.69 5.2429e-06 1.435e-08 d yr n .3668696298254366 1.9602e-09 deg/d Q 2.163441826451328 7.7061e-09 au   Orbit Determination Parameters    # obs. used (total)      1283      data-arc span      8106 days (22.19 yr)      first obs. used      1998-08-20      last obs. used      2020-10-29      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .41905      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 20:03:07   Additional Information  Earth MOID = .69008 au   Jupiter MOID = 3.16323 au   T_jup = 3.844  [ 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 15.6   n/a MPO436470   100980 (1998 QJ27)          Discovered 1998-Aug-24 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Dec-02 01:17 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin