+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   243327 (2008 SQ195) Classification: Main-belt Asteroid          SPK-ID: 2243327 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 10 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2065289844308365 8.8846e-08   a 2.565872410560904 3.4106e-08 au q 2.035945387428658 2.4228e-07 au i 5.662772904501507 1.4822e-05 deg node 39.33513828755678 0.00010151 deg peri 38.9483355987777 0.00012433 deg M 266.4043622268926 7.4067e-05 deg tp 2459390.805004310291 (2021-Jun-25.30500431) 0.00031493 TDB period 1501.243058916119 4.11 2.9932e-05 8.195e-08 d yr n .239801275257796 4.7812e-09 deg/d Q 3.09579943369315 4.115e-08 au   Orbit Determination Parameters    # obs. used (total)      148      data-arc span      6688 days (18.31 yr)      first obs. used      2002-04-06      last obs. used      2020-07-28      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .65093      source      ORB      producer      Otto Matic      solution date      2020-Aug-25 16:44:48   Additional Information  Earth MOID = 1.05482 au   Jupiter MOID = 2.19036 au   T_jup = 3.395  [ hide covariance matrix ] Orbital Elements at Epoch 2456830.5 (2014-Jun-22.0) TDB Reference: JPL 10 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2074530802377547 9.3515e-08   q 2.032712138060155 2.5735e-07 au tp 2456383.678440143317 (2013-Apr-01.17844014) 0.00026292 TDB node 39.51929914689546 0.000101 deg peri 37.91253520529204 0.00012377 deg i 5.680713498013318 1.4864e-05 deg   Orbit Determination Parameters    # obs. used (total)      148      data-arc span      6688 days (18.31 yr)      first obs. used      2002-04-06      last obs. used      2020-07-28      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .65093      source      ORB      producer      Otto Matic      solution date      2020-Aug-25 16:44:48   Additional Information  Jupiter MOID = 2.19036 au   T_jup = 3.395  Orbit Covariance (6×6)   e q tp node peri i e 8.745033150556291E-15 -2.39600440715007E-14 -1.92184607879866E-11 2.095107137912424E-15 -5.114956793088079E-12 -2.095649254882334E-14 q -2.39600440715007E-14 6.622936881060444E-14 5.510380175514086E-11 -8.619605492471633E-16 1.472567809364274E-11 5.996257772020633E-14 tp -1.92184607879866E-11 5.510380175514086E-11 6.912546841800806E-8 9.823947684351737E-12 1.89169862206079E-8 7.483068392715979E-11 node 2.095107137912424E-15 -8.619605492471633E-16 9.823947684351737E-12 1.020140861865201E-8 -1.014773934948854E-8 -1.083802769839565E-9 peri -5.114956793088079E-12 1.472567809364274E-11 1.89169862206079E-8 -1.014773934948854E-8 1.531820029477297E-8 1.099254155421444E-9 i -2.095649254882334E-14 5.996257772020633E-14 7.483068392715979E-11 -1.083802769839565E-9 1.099254155421444E-9 2.20933348992522E-10 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 17.1   n/a MPO440238   diameter diameter 2.355 km 0.530 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.035   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   243327 (2008 SQ195)          Discovered 2008-Sep-25 by Spacewatch at Kitt Peak Reference: 20100626/Numbers.arc Last Updated: 2010-06-28 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Sep-29 21:33 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin