+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   150220 (1998 SS134) Classification: Main-belt Asteroid          SPK-ID: 2150220 [ 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 .2828570444054911 3.2284e-08   a 2.365701027918554 8.7006e-09 au q 1.696545827214479 7.462e-08 au i 4.037324931248509 4.2563e-06 deg node 182.2236655425915 5.5451e-05 deg peri 153.6650018132291 5.5931e-05 deg M 59.0007187048581 7.3823e-06 deg tp 2458982.682376222271 (2020-May-13.18237622) 2.6818e-05 TDB period 1329.040497832544 3.64 7.3319e-06 2.007e-08 d yr n .2708721070479819 1.4943e-09 deg/d Q 3.034856228622628 1.1162e-08 au   Orbit Determination Parameters    # obs. used (total)      595      data-arc span      8178 days (22.39 yr)      first obs. used      1998-09-18      last obs. used      2021-02-07      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .55973      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 19:17:37   Additional Information  Earth MOID = .686458 au   Jupiter MOID = 2.3678 au   T_jup = 3.490  [ 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 16.3   n/a MPO469594   150220 (1998 SS134)          Discovered 1998-Sep-26 by LINEAR at Socorro Reference: 20070303/Numbers.arc Last Updated: 2007-03-07 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-20 14:53 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin