+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   173139 (1995 SO16) Classification: Main-belt Asteroid          SPK-ID: 2173139 [ 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 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2054875554526885 4.8602e-08   a 2.428249539933726 8.6297e-09 au q 1.929274477943629 1.1654e-07 au i .2716833765776248 3.9187e-06 deg node 298.3418533125062 0.001076 deg peri 77.05600486775838 0.0010761 deg M 174.5212980929683 9.9908e-06 deg tp 2458330.485296512373 (2018-Jul-30.98529651) 3.7543e-05 TDB period 1382.096603057894 3.78 7.3677e-06 2.017e-08 d yr n .2604738331629631 1.3885e-09 deg/d Q 2.927224601923823 1.0403e-08 au   Orbit Determination Parameters    # obs. used (total)      460      data-arc span      9006 days (24.66 yr)      first obs. used      1995-08-25      last obs. used      2020-04-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .58104      source      ORB      producer      Otto Matic      solution date      2020-May-21 03:24:31   Additional Information  Earth MOID = .930443 au   Jupiter MOID = 2.53767 au   T_jup = 3.480  [ hide covariance matrix ] Orbital Elements at Epoch 2456880.5 (2014-Aug-11.0) TDB Reference: JPL 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2041191200193915 4.853e-08   q 1.933398031254978 1.1627e-07 au tp 2456944.939208782280 (2014-Oct-14.43920878) 3.7529e-05 TDB node 299.3130446741291 0.0010646 deg peri 75.63278062869276 0.0010647 deg i .2736845812608961 3.9357e-06 deg   Orbit Determination Parameters    # obs. used (total)      460      data-arc span      9006 days (24.66 yr)      first obs. used      1995-08-25      last obs. used      2020-04-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .58104      source      ORB      producer      Otto Matic      solution date      2020-May-21 03:24:31   Additional Information  Jupiter MOID = 2.53767 au   T_jup = 3.480  Orbit Covariance (6×6)   e q tp node peri i e 2.355117378480425E-15 -5.633430780152813E-15 -2.602693627533012E-13 1.243729481604122E-14 -1.503227125262742E-13 -3.448887876011613E-16 q -5.633430780152813E-15 1.351945450309288E-14 6.35750888171413E-13 -2.730392517556972E-14 3.597543106793078E-13 8.512479880058887E-16 tp -2.602693627533012E-13 6.35750888171413E-13 1.40846041830185E-9 -2.426630450532695E-11 4.84512775580161E-10 -3.981363681978917E-14 node 1.243729481604122E-14 -2.730392517556972E-14 -2.426630450532695E-11 1.133407066547544E-6 -1.133400821696646E-6 7.235797477935023E-10 peri -1.503227125262742E-13 3.597543106793078E-13 4.84512775580161E-10 -1.133400821696646E-6 1.133556037354301E-6 -7.235770295972001E-10 i -3.448887876011613E-16 8.512479880058887E-16 -3.981363681978917E-14 7.235797477935023E-10 -7.235770295972001E-10 1.548988233788266E-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 16.9   n/a MPO310312   173139 (1995 SO16)          Discovered 1995-Sep-18 by Spacewatch at Kitt Peak Reference: 20080122/Numbers.arc Last Updated: 2008-01-28 [ show close-approach data ] Alternate Designations  1995 SO16 = 1999 VQ63  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-22 23:35 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin