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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 ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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.arcLast Updated: 2007-12-22

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