+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   359318 (2009 JS12) Classification: Main-belt Asteroid          SPK-ID: 2359318 [ 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 .1929044489062309 1.0516e-07   a 2.53571547210888 2.241e-08 au q 2.046564676378714 2.7109e-07 au i 6.343089358129263 1.1011e-05 deg node 85.04536466241508 9.776e-05 deg peri 181.1461432396743 0.00010178 deg M 243.7681464454953 3.3834e-05 deg tp 2459476.680789276892 (2021-Sep-19.18078928) 0.00014156 TDB period 1474.854602222227 4.04 1.9552e-05 5.353e-08 d yr n .2440918579076016 3.2359e-09 deg/d Q 3.024866267839047 2.6733e-08 au   Orbit Determination Parameters    # obs. used (total)      192      data-arc span      5347 days (14.64 yr)      first obs. used      2005-05-15      last obs. used      2020-01-04      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55251      source      ORB      producer      Otto Matic      solution date      2020-Jan-30 08:46:27   Additional Information  Earth MOID = 1.03068 au   Jupiter MOID = 2.0647 au   T_jup = 3.414  [ hide covariance matrix ] Orbital Elements at Epoch 2457052.5 (2015-Jan-30.0) TDB Reference: JPL 12 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1938336606525671 1.0444e-07   q 2.043189294748313 2.6918e-07 au tp 2456527.781326878600 (2013-Aug-23.28132688) 0.00012633 TDB node 85.10147420961519 9.7763e-05 deg peri 181.1352259451768 0.00010173 deg i 6.343887621189373 1.1009e-05 deg   Orbit Determination Parameters    # obs. used (total)      192      data-arc span      5347 days (14.64 yr)      first obs. used      2005-05-15      last obs. used      2020-01-04      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55251      source      ORB      producer      Otto Matic      solution date      2020-Jan-30 08:46:27   Additional Information  Jupiter MOID = 2.0647 au   T_jup = 3.414  Orbit Covariance (6×6)   e q tp node peri i e 1.090808128106053E-14 -2.805428513031174E-14 -1.127844576530058E-11 -4.804002610777813E-13 -2.52094309521925E-12 1.203069285998941E-14 q -2.805428513031174E-14 7.24597292444566E-14 2.911389816026395E-11 1.240153147589188E-12 6.542566644829104E-12 -3.020022368119394E-14 tp -1.127844576530058E-11 2.911389816026395E-11 1.595817539636292E-8 5.645758236039598E-10 3.789349475458548E-9 -1.404231499138649E-11 node -4.804002610777813E-13 1.240153147589188E-12 5.645758236039598E-10 9.557640782480669E-9 -9.347106566780112E-9 -8.867773108379202E-10 peri -2.52094309521925E-12 6.542566644829104E-12 3.789349475458548E-9 -9.347106566780112E-9 1.034995559136604E-8 8.777731650778514E-10 i 1.203069285998941E-14 -3.020022368119394E-14 -1.404231499138649E-11 -8.867773108379202E-10 8.777731650778514E-10 1.212005795109293E-10 [ 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 16.9   n/a MPO460414   359318 (2009 JS12)          Discovered 2009-May-14 by Spacewatch at Kitt Peak Reference: 20130327/Numbers.arc Last Updated: 2013-03-29 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Sep-29 20:45 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin