+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1928755817322358 1.0225e-07   a 2.53530041614953 2.0133e-08 au q 2.04630287351871 2.649e-07 au i 6.342906413325463 9.9725e-06 deg node 85.04117219596566 9.3495e-05 deg peri 181.2007536270046 9.7831e-05 deg M 292.533005343126 3.3747e-05 deg tp 2459476.832160422238 (2021-Sep-19.33216042) 0.00013988 TDB period 1474.492501969927 4.04 1.7563e-05 4.808e-08 d yr n .244151801056322 2.9082e-09 deg/d Q 3.02429795878035 2.4016e-08 au   Orbit Determination Parameters    # obs. used (total)      203      data-arc span      5783 days (15.83 yr)      first obs. used      2005-05-15      last obs. used      2021-03-15      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .55765      source      ORB      producer      Otto Matic      solution date      2021-Apr-14 09:27:38   Additional Information  Earth MOID = 1.02865 au   Jupiter MOID = 2.06448 au   T_jup = 3.414  [ hide covariance matrix ] Orbital Elements at Epoch 2457301.5 (2015-Oct-06.0) TDB Reference: JPL 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1938115364094762 1.0178e-07   q 2.043199607210083 2.6384e-07 au tp 2458001.280704455702 (2017-Sep-04.78070446) 0.00013068 TDB node 85.10075685429157 9.3487e-05 deg peri 181.0976515446181 9.7764e-05 deg i 6.343893980173383 9.9705e-06 deg   Orbit Determination Parameters    # obs. used (total)      203      data-arc span      5783 days (15.83 yr)      first obs. used      2005-05-15      last obs. used      2021-03-15      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .55765      source      ORB      producer      Otto Matic      solution date      2021-Apr-14 09:27:38   Additional Information  Jupiter MOID = 2.06448 au   T_jup = 3.414  Orbit Covariance (6×6)   e q tp node peri i e 1.035950541434841E-14 -2.680958007230095E-14 -1.139515237249895E-11 -3.997288716156642E-13 -2.474696428202324E-12 -6.349933413640255E-16 q -2.680958007230095E-14 6.961412176723943E-14 2.978049041224075E-11 1.038767215602245E-12 6.445080048154764E-12 2.043378480938424E-15 tp -1.139515237249895E-11 2.978049041224075E-11 1.707846185133475E-8 4.948920511108184E-10 3.936283905462798E-9 2.00596029990288E-12 node -3.997288716156642E-13 1.038767215602245E-12 4.948920511108184E-10 8.739746898908333E-9 -8.560276371212135E-9 -7.555150794526848E-10 peri -2.474696428202324E-12 6.445080048154764E-12 3.936283905462798E-9 -8.560276371212135E-9 9.557761343546199E-9 7.515188341655502E-10 i -6.349933413640255E-16 2.043378480938424E-15 2.00596029990288E-12 -7.555150794526848E-10 7.515188341655502E-10 9.941104508319265E-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 17.03   n/a MPCxxxxx   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 ] 2021-Jun-23 11:17 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin