+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   109492 (2001 QG228) Classification: Main-belt Asteroid          SPK-ID: 2109492 [ 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 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09546271829237712 4.9979e-08   a 2.388664631915681 1.49e-08 au q 2.160636213064149 1.2221e-07 au i 7.281926802520371 6.7739e-06 deg node 232.2904390390503 4.2581e-05 deg peri 27.58394600791434 5.6922e-05 deg M 97.04462393362533 4.0163e-05 deg tp 2458637.003547940742 (2019-Jun-02.50354794) 0.00014913 TDB period 1348.438660866315 3.69 1.2617e-05 3.454e-08 d yr n .2669754364419625 2.498e-09 deg/d Q 2.616693050767212 1.6322e-08 au   Orbit Determination Parameters    # obs. used (total)      422      data-arc span      7034 days (19.26 yr)      first obs. used      1998-11-19      last obs. used      2018-02-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .60422      source      ORB      producer      Otto Matic      solution date      2019-Jul-13 13:12:57   Additional Information  Earth MOID = 1.14858 au   Jupiter MOID = 2.42096 au   T_jup = 3.516  [ 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 16.2   n/a MPO436526   109492 (2001 QG228)          Discovered 2001-Aug-24 by LONEOS at Anderson Mesa Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Aug-03 12:36 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin