+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   266775 (2009 SZ198) Classification: Outer Main-belt Asteroid          SPK-ID: 2266775 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 12 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2041279132024341 5.9545e-08   a 3.207090528794287 2.957e-08 au q 2.552433831700218 2.0236e-07 au i 2.887798846510994 6.1249e-06 deg node 281.2676241250721 0.00010915 deg peri 75.5298025675646 0.00011071 deg M 324.8499948585251 1.4819e-05 deg tp 2459205.327445073730 (2020-Dec-21.82744507) 8.6716e-05 TDB period 2097.805673989401 5.74 2.9013e-05 7.943e-08 d yr n .1716078874528866 2.3734e-09 deg/d Q 3.861747225888355 3.5606e-08 au   Orbit Determination Parameters    # obs. used (total)      177      data-arc span      6260 days (17.14 yr)      first obs. used      2003-08-28      last obs. used      2020-10-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53343      source      ORB      producer      Otto Matic      solution date      2020-Nov-11 22:23:32   Additional Information  Earth MOID = 1.55023 au   Jupiter MOID = 1.61614 au   T_jup = 3.158  [ hide covariance matrix ] Orbital Elements at Epoch 2458111.5 (2017-Dec-24.0) TDB Reference: JPL 12 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2076812655063824 5.9127e-08   q 2.535361819862996 2.0103e-07 au tp 2457114.559294617625 (2015-Apr-02.05929462) 8.5957e-05 TDB node 281.4199714381864 0.00010959 deg peri 76.00984276980397 0.00011109 deg i 2.88385049766618 6.1165e-06 deg   Orbit Determination Parameters    # obs. used (total)      177      data-arc span      6260 days (17.14 yr)      first obs. used      2003-08-28      last obs. used      2020-10-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53343      source      ORB      producer      Otto Matic      solution date      2020-Nov-11 22:23:32   Additional Information  Jupiter MOID = 1.61614 au   T_jup = 3.158  Orbit Covariance (6×6)   e q tp node peri i e 3.496035287590088E-15 -1.182374868747598E-14 2.175082401366695E-14 2.631906673458956E-14 7.774917102833877E-15 -3.124761469469454E-15 q -1.182374868747598E-14 4.041465672944725E-14 -5.280568712150396E-13 -8.715025103073421E-14 -7.014314718159984E-14 1.088856339637868E-14 tp 2.175082401366695E-14 -5.280568712150396E-13 7.388543522569482E-9 -1.778254605337489E-11 1.582273402598346E-9 1.67706210287584E-12 node 2.631906673458956E-14 -8.715025103073421E-14 -1.778254605337489E-11 1.200915307500511E-8 -1.199748062599158E-8 1.71247267614573E-10 peri 7.774917102833877E-15 -7.014314718159984E-14 1.582273402598346E-9 -1.199748062599158E-8 1.234142135243199E-8 -1.707145544108091E-10 i -3.124761469469454E-15 1.088856339637868E-14 1.67706210287584E-12 1.71247267614573E-10 -1.707145544108091E-10 3.741197405708947E-11 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 16.4   n/a MPO476122   266775 (2009 SZ198)          Discovered 2009-Sep-22 by Spacewatch at Kitt Peak Reference: 20110218/Numbers.arc Last Updated: 2011-02-22 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-20 23:49 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin