+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   212337 (2005 SD273) Classification: Outer Main-belt Asteroid          SPK-ID: 2212337 [ 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 16 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1571897335380089 6.162e-08   a 3.984351892046235 5.9172e-08 au q 3.358052679813826 2.4176e-07 au i .8610847192202318 6.3896e-06 deg node 39.12075718944733 0.00047827 deg peri 253.6225347551706 0.00047903 deg M 32.04035089657631 2.5043e-05 deg tp 2458741.958823146242 (2019-Sep-15.45882315) 0.00020237 TDB period 2904.925229058544 7.95 6.4712e-05 1.772e-07 d yr n .123927458235017 2.7607e-09 deg/d Q 4.610651104278643 6.8473e-08 au   Orbit Determination Parameters    # obs. used (total)      265      data-arc span      6809 days (18.64 yr)      first obs. used      2002-03-16      last obs. used      2020-11-05      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55161      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 05:25:24   Additional Information  Earth MOID = 2.34205 au   Jupiter MOID = .595546 au   T_jup = 3.034  [ hide covariance matrix ] Orbital Elements at Epoch 2457840.5 (2017-Mar-28.0) TDB Reference: JPL 16 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .162641858471316 6.0504e-08   q 3.333601206372483 2.4322e-07 au tp 2458753.271698019060 (2019-Sep-26.77169802) 0.00019663 TDB node 39.28660818265841 0.00046971 deg peri 255.7690730022924 0.00047037 deg i .8753713494435819 6.4403e-06 deg   Orbit Determination Parameters    # obs. used (total)      265      data-arc span      6809 days (18.64 yr)      first obs. used      2002-03-16      last obs. used      2020-11-05      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55161      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 05:25:24   Additional Information  Jupiter MOID = .595546 au   T_jup = 3.034  Orbit Covariance (6×6)   e q tp node peri i e 3.660723317211091E-15 -1.441197404510156E-14 7.042671883957656E-12 1.920501270785818E-16 7.626477566815371E-13 -3.521102444694373E-16 q -1.441197404510156E-14 5.915739513133814E-14 -2.978862408992497E-11 -4.515183275802067E-14 -3.321223302805446E-12 2.167018931009038E-15 tp 7.042671883957656E-12 -2.978862408992497E-11 3.866366392909278E-8 -2.897728883716005E-10 5.062637587086729E-9 1.133000948245036E-13 node 1.920501270785818E-16 -4.515183275802067E-14 -2.897728883716005E-10 2.20630064640431E-7 -2.206294115661641E-7 -1.556615834109113E-9 peri 7.626477566815371E-13 -3.321223302805446E-12 5.062637587086729E-9 -2.206294115661641E-7 2.212450664844774E-7 1.556373406300688E-9 i -3.521102444694373E-16 2.167018931009038E-15 1.133000948245036E-13 -1.556615834109113E-9 1.556373406300688E-9 4.147763298337874E-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 14.8   n/a MPO440125   212337 (2005 SD273)          Discovered 2005-Sep-30 by Mt. Lemmon Survey at Mount Lemmon Reference: 20090409/Numbers.arc Last Updated: 2009-04-10 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-19 00:18 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin