+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   259435 (2003 SQ23) Classification: Main-belt Asteroid          SPK-ID: 2259435 [ 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 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1416899506740136 4.0206e-08   a 2.261314178323679 9.0133e-09 au q 1.94090868393855 9.0683e-08 au i 4.465828536657006 6.8735e-06 deg node 350.922020637566 5.0459e-05 deg peri 299.6829751741013 5.6404e-05 deg M 19.34267085326933 2.3733e-05 deg tp 2458933.764990537683 (2020-Mar-25.26499054) 8.1901e-05 TDB period 1242.052020048383 3.40 7.426e-06 2.033e-08 d yr n .2898429326542832 1.7329e-09 deg/d Q 2.581719672708809 1.029e-08 au   Orbit Determination Parameters    # obs. used (total)      191      data-arc span      6820 days (18.67 yr)      first obs. used      2002-03-05      last obs. used      2020-11-05      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .48964      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 05:50:29   Additional Information  Earth MOID = .929522 au   Jupiter MOID = 2.59004 au   T_jup = 3.602  [ 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 MPO433690   259435 (2003 SQ23)          Discovered 2003-Sep-17 by Spacewatch at Kitt Peak Reference: 20110119/Numbers.arc Last Updated: 2011-01-25 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-22 23:36 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin