+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   351636 (2005 YQ23) Classification: Main-belt Asteroid          SPK-ID: 2351636 [ 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 10 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1017313491336777 5.5481e-08   a 2.271540556241773 2.0177e-08 au q 2.040453670843432 1.3245e-07 au i 6.415940719288018 6.2993e-06 deg node 285.6873107765455 4.2526e-05 deg peri 343.30678579 4.9772e-05 deg M 277.5931857564893 2.6038e-05 deg tp 2459286.746242139457 (2021-Mar-13.24624214) 9.1545e-05 TDB period 1250.486966595963 3.42 1.6661e-05 4.562e-08 d yr n .2878878465882622 3.8357e-09 deg/d Q 2.502627441640113 2.223e-08 au   Orbit Determination Parameters    # obs. used (total)      133      data-arc span      5616 days (15.38 yr)      first obs. used      2004-09-16      last obs. used      2020-02-01      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .60531      source      ORB      producer      Otto Matic      solution date      2020-Feb-25 23:56:12   Additional Information  Earth MOID = 1.02518 au   Jupiter MOID = 2.58146 au   T_jup = 3.597  [ 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 MPO460398   351636 (2005 YQ23)          Discovered 2005-Dec-24 by Spacewatch at Kitt Peak Reference: 20130127/Numbers.arc Last Updated: 2013-01-31 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Aug-05 23:49 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin