+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   118290 (1998 SZ26) Classification: Main-belt Asteroid          SPK-ID: 2118290 [ 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 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1918000207346799 4.7888e-08   a 2.277895923223747 1.1066e-08 au q 1.840995437917989 1.1344e-07 au i 4.970764048550763 4.87e-06 deg node 182.1049825478094 4.8764e-05 deg peri 160.530125809229 5.006e-05 deg M 128.5298977841778 1.1832e-05 deg tp 2458552.166796069440 (2019-Mar-09.66679607) 3.9996e-05 TDB period 1255.738596213761 3.44 9.1503e-06 2.505e-08 d yr n .2866838696249789 2.089e-09 deg/d Q 2.714796408529504 1.3188e-08 au   Orbit Determination Parameters    # obs. used (total)      581      data-arc span      9779 days (26.77 yr)      first obs. used      1993-02-26      last obs. used      2019-12-06      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .54053      source      ORB      producer      Otto Matic      solution date      2019-Dec-14 09:51:59   Additional Information  Earth MOID = .834135 au   Jupiter MOID = 2.69647 au   T_jup = 3.578  [ 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 MPO348194   118290 (1998 SZ26)          Discovered 1998-Sep-20 by BAO Schmidt CCD Asteroid Program at Xinglong Reference: 20051116/Numbers.arc Last Updated: 2005-11-21 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Oct-21 11:18 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin