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28241 (1999 AC22)
Classification: Main-belt Asteroid          SPK-ID: 2028241
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05437202183601783 5.133e-08  
a 2.618757009741018 1.8756e-08 au
q 2.476369896424154 1.3732e-07 au
i 5.237462250176454 6.5855e-06 deg
node 60.0336688458223 5.9449e-05 deg
peri 40.9974778541624 8.7571e-05 deg
M 42.85707428256739 6.2602e-05 deg
tp 2457216.227193560701
(2015-Jul-12.72719356)
0.00026924 JED
period 1547.894050834255
4.24
1.663e-05
4.553e-08
d
yr
n .2325740575112192 2.4987e-09 deg/d
Q 2.761144123057881 1.9776e-08 au
  Orbit Determination Parameters
   # obs. used (total)      874  
   data-arc span      10426 days (28.54 yr)  
   first obs. used      1987-06-02  
   last obs. used      2015-12-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54269  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 14:06:10  

Additional Information
 Earth MOID = 1.49565 au 
 Jupiter MOID = 2.32359 au 
 T_jup = 3.398 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.6 mag n/a MPO358893  

28241 (1999 AC22)          Discovered 1999-Jan-10 by Beijing Schmidt CCD Asteroid Program at Xinglong
Reference: 20010902/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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