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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0731696038499325 5.485e-08  
a 3.204325731598022 3.6268e-08 au
q 2.96986648721085 1.8625e-07 au
i 12.1343855446093 6.5378e-06 deg
node 72.84570880710311 2.7054e-05 deg
peri 46.51916014560032 5.418e-05 deg
M 50.14978665628172 4.448e-05 deg
tp 2458908.643075382010
(2020-Feb-29.14307538)
0.00025901 TDB
period 2095.093516201741
5.74
3.557e-05
9.739e-08
d
yr
n .1718300387147658 2.9173e-09 deg/d
Q 3.438784975985195 3.8922e-08 au
  Orbit Determination Parameters
   # obs. used (total)      354  
   data-arc span      7035 days (19.26 yr)  
   first obs. used      2001-10-20  
   last obs. used      2021-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54981  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-23 22:18:19  

Additional Information
 Earth MOID = 2.001 au 
 Jupiter MOID = 1.78824 au 
 T_jup = 3.154 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457571.5 (2016-Jul-02.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07412991070285586 5.4819e-08  
q 2.965259217811811 1.8611e-07 au
tp 2456818.155215192822
(2014-Jun-09.65521519)
0.00025913 TDB
node 72.86633366538915 2.7052e-05 deg
peri 47.22981034178213 5.3661e-05 deg
i 12.13686403935292 6.5391e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      354  
   data-arc span      7035 days (19.26 yr)  
   first obs. used      2001-10-20  
   last obs. used      2021-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54981  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-23 22:18:19  

Additional Information
 Jupiter MOID = 1.78824 au 
 T_jup = 3.154 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.005157792517757E-15 -1.004629628912978E-14 -5.668309795801338E-13 -5.021973339478816E-15 -1.345081501582142E-13 -1.791876721644804E-15
q -1.004629628912978E-14 3.463762790215842E-14 3.001811200623959E-13 1.614489473387306E-14 2.287343204001587E-13 8.239636696225662E-15
tp -5.668309795801338E-13 3.001811200623959E-13 6.714590576324961E-8 -7.122072162819201E-12 1.203544475214474E-8 -9.512512311539111E-12
node -5.021973339478816E-15 1.614489473387306E-14 -7.122072162819201E-12 7.318125306453461E-10 -7.162223100345239E-10 4.075236121450545E-12
peri -1.345081501582142E-13 2.287343204001587E-13 1.203544475214474E-8 -7.162223100345239E-10 2.879519931586031E-9 -5.417327557970511E-12
i -1.791876721644804E-15 8.239636696225662E-15 -9.512512311539111E-12 4.075236121450545E-12 -5.417327557970511E-12 4.27597847990502E-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 15.22   n/a E2021B55  

172393 (2003 AK68)          Discovered 2003-Jan-08 by LINEAR at Socorro
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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