+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   172393 (2003 AK68) Classification: Outer Main-belt Asteroid          SPK-ID: 2172393 [ 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 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07327241099066473 5.7314e-08   a 3.204954338983856 3.7653e-08 au q 2.970119607451516 1.9656e-07 au i 12.13453011299804 6.7526e-06 deg node 72.85209604868334 2.7158e-05 deg peri 46.65825214300347 5.4176e-05 deg M 15.65359178011505 4.444e-05 deg tp 2458909.373917626482 (2020-Feb-29.87391763) 0.00025876 TDB period 2095.710052701103 5.74 3.6932e-05 1.011e-07 d yr n .171779488071838 3.0272e-09 deg/d Q 3.439789070516195 4.0412e-08 au   Orbit Determination Parameters    # obs. used (total)      350      data-arc span      6680 days (18.29 yr)      first obs. used      2001-10-20      last obs. used      2020-02-03      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .54902      source      ORB      producer      Otto Matic      solution date      2020-Feb-24 16:47:55   Additional Information  Earth MOID = 2.00145 au   Jupiter MOID = 1.78753 au   T_jup = 3.154  [ hide covariance matrix ] Orbital Elements at Epoch 2457503.5 (2016-Apr-25.0) TDB Reference: JPL 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07416155928367024 5.73e-08   q 2.965133364642458 1.965e-07 au tp 2456818.233067883307 (2014-Jun-09.73306788) 0.00025903 TDB node 72.86632402355021 2.7159e-05 deg peri 47.23794892858515 5.369e-05 deg i 12.13696346698211 6.7538e-06 deg   Orbit Determination Parameters    # obs. used (total)      350      data-arc span      6680 days (18.29 yr)      first obs. used      2001-10-20      last obs. used      2020-02-03      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .54902      source      ORB      producer      Otto Matic      solution date      2020-Feb-24 16:47:55   Additional Information  Jupiter MOID = 1.78753 au   T_jup = 3.154  Orbit Covariance (6×6)   e q tp node peri i e 3.283256982463401E-15 -1.109769283537792E-14 -4.807343283357872E-13 -5.630060345031867E-15 -1.160805598108628E-13 -2.494218942579732E-15 q -1.109769283537792E-14 3.861134168959804E-14 -3.220777773305948E-14 1.835045905388854E-14 1.577641013336872E-13 1.101331414032408E-14 tp -4.807343283357872E-13 -3.220777773305948E-14 6.709655611456592E-8 -3.80245614817173E-12 1.202407724501702E-8 -7.020865191192217E-12 node -5.630060345031867E-15 1.835045905388854E-14 -3.80245614817173E-12 7.376220784088877E-10 -7.213067223861099E-10 8.148486143967153E-12 peri -1.160805598108628E-13 1.577641013336872E-13 1.202407724501702E-8 -7.213067223861099E-10 2.882591365933946E-9 -8.945907048131072E-12 i -2.494218942579732E-15 1.101331414032408E-14 -7.020865191192217E-12 8.148486143967153E-12 -8.945907048131072E-12 4.561340798683828E-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 15.1   n/a MPO417927   172393 (2003 AK68)          Discovered 2003-Jan-08 by LINEAR at Socorro Reference: 20071224/Numbers.arc Last Updated: 2007-12-22 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Sep-27 23:33 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin