+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   227197 (2005 QK78) Classification: Main-belt Asteroid          SPK-ID: 2227197 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1087378803871657 5.3122e-08   a 2.337286313276826 9.8105e-09 au q 2.083134753713171 1.2524e-07 au i 2.841984011949264 5.3734e-06 deg node 315.7302186262402 8.5004e-05 deg peri 156.6872052862537 8.9154e-05 deg M 351.3799300027677 2.3417e-05 deg tp 2459231.751768056646 (2021-Jan-17.25176806) 8.4867e-05 TDB period 1305.167649915257 3.57 8.2174e-06 2.25e-08 d yr n .2758266342437882 1.7366e-09 deg/d Q 2.591437872840482 1.0877e-08 au   Orbit Determination Parameters    # obs. used (total)      424      data-arc span      6610 days (18.10 yr)      first obs. used      2002-12-14      last obs. used      2021-01-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49377      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 13:11:07   Additional Information  Earth MOID = 1.09991 au   Jupiter MOID = 2.48701 au   T_jup = 3.557  [ 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 16.8   n/a MPO440185   227197 (2005 QK78)          Discovered 2005-Aug-25 by NEAT at Palomar Reference: 20091202/Numbers.arc Last Updated: 2009-12-04 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-14 01:12 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin