+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   441826 (2009 SR64) Classification: Main-belt Asteroid          SPK-ID: 2441826 [ 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 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .05321912958506134 9.5895e-08   a 3.164687247251767 6.5528e-08 au q 2.996265346544084 3.4115e-07 au i 9.424003069502088 9.9822e-06 deg node 175.3833628921505 3.7367e-05 deg peri 272.4803961177768 0.00010856 deg M 269.8421539278248 0.0001085 deg tp 2459715.486268393889 (2022-May-15.98626839) 0.00062691 TDB period 2056.338573942675 5.63 6.3868e-05 1.749e-07 d yr n .1750684466856846 5.4374e-09 deg/d Q 3.33310914795945 6.9015e-08 au   Orbit Determination Parameters    # obs. used (total)      115      data-arc span      7124 days (19.50 yr)      first obs. used      2001-03-21      last obs. used      2020-09-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53588      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 08:52:11   Additional Information  Earth MOID = 2.03199 au   Jupiter MOID = 1.79728 au   T_jup = 3.181  [ hide covariance matrix ] Orbital Elements at Epoch 2457593.5 (2016-Jul-24.0) TDB Reference: JPL 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .05257574367597022 9.8829e-08   q 2.999372243785096 3.5153e-07 au tp 2457621.547190056362 (2016-Aug-21.04719006) 0.00058586 TDB node 175.802977759075 3.7321e-05 deg peri 266.1552662820173 0.00010673 deg i 9.42618794234226 9.9929e-06 deg   Orbit Determination Parameters    # obs. used (total)      115      data-arc span      7124 days (19.50 yr)      first obs. used      2001-03-21      last obs. used      2020-09-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53588      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 08:52:11   Additional Information  Jupiter MOID = 1.79728 au   T_jup = 3.181  Orbit Covariance (6×6)   e q tp node peri i e 9.767202251902836E-15 -3.436218558754012E-14 -2.738632400418507E-11 4.56381681480867E-14 -4.145287251412787E-12 5.844968374082106E-16 q -3.436218558754012E-14 1.235706667857612E-13 1.005426716872879E-10 -1.606151221626464E-13 1.530269286506204E-11 5.754838795641712E-15 tp -2.738632400418507E-11 1.005426716872879E-10 3.432282996309076E-7 -2.381259281907407E-10 5.850704990327071E-8 3.338767774685216E-11 node 4.56381681480867E-14 -1.606151221626464E-13 -2.381259281907407E-10 1.39283310124404E-9 -1.412087202717206E-9 6.330062281061893E-11 peri -4.145287251412787E-12 1.530269286506204E-11 5.850704990327071E-8 -1.412087202717206E-9 1.139084416119402E-8 -5.691078686255279E-11 i 5.844968374082106E-16 5.754838795641712E-15 3.338767774685216E-11 6.330062281061893E-11 -5.691078686255279E-11 9.985734498541744E-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 16.3   n/a MPO440828   441826 (2009 SR64)          Discovered 2007-Apr-19 by Spacewatch at Kitt Peak Reference: Last Updated: 2015-09-02 [ show close-approach data ] Alternate Designations  2009 SR64 = 2007 JD46 = 2012 DR57  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-03 22:29 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin