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72220 (2001 AJ9)
Classification: Main-belt Asteroid          SPK-ID: 2072220
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1282696716826144 3.9752e-08  
a 2.229074050373004 7.2487e-09 au
q 1.943151453775423 8.6748e-08 au
i 5.133894536225656 4.0557e-06 deg
node 155.1916398153415 4.1887e-05 deg
peri 236.1171672756107 4.4913e-05 deg
M 63.97777326582477 1.6035e-05 deg
tp 2458984.471131611497
(2020-May-14.97113161)
5.3798e-05 TDB
period 1215.584548351324
3.33
5.9294e-06
1.623e-08
d
yr
n .296153813807737 1.4446e-09 deg/d
Q 2.514996646970584 8.1785e-09 au
  Orbit Determination Parameters
   # obs. used (total)      818  
   data-arc span      9460 days (25.90 yr)  
   first obs. used      1995-04-26  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5596  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 07:15:25  

Additional Information
 Earth MOID = .952316 au 
 Jupiter MOID = 2.90884 au 
 T_jup = 3.627 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.17   n/a MPCxxxxx  

72220 (2001 AJ9)          Discovered 2001-Jan-02 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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