+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   227164 (2005 QX23) Classification: Main-belt Asteroid          SPK-ID: 2227164 [ 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 8 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2182485997743235 1.5973e-07   a 2.45004794219486 7.7784e-08 au q 1.915328409430869 3.4227e-07 au i 2.78166326444055 1.1942e-05 deg node 24.07265226319799 0.00014682 deg peri 314.8667292131083 0.00017611 deg M 3.405931163582115 0.00013086 deg tp 2459187.247626530039 (2020-Dec-03.74762653) 0.00050856 TDB period 1400.74893474012 3.84 6.6707e-05 1.826e-07 d yr n .2570053712493386 1.2239e-08 deg/d Q 2.984767474958851 9.4761e-08 au   Orbit Determination Parameters    # obs. used (total)      112      data-arc span      6435 days (17.62 yr)      first obs. used      2001-08-20      last obs. used      2019-04-03      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .56308      source      ORB      producer      Otto Matic      solution date      2021-Apr-14 00:38:41   Additional Information  Earth MOID = .905942 au   Jupiter MOID = 2.41177 au   T_jup = 3.462  [ 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 17.7   n/a MPO433486   227164 (2005 QX23)          Discovered 2005-Aug-27 by Spacewatch at Kitt Peak Reference: 20091202/Numbers.arc Last Updated: 2009-12-04 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-17 19:03 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin