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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05381004672933524 5.6852e-08  
a 2.617316886072541 2.1974e-08 AU
q 2.4764789421275 1.5077e-07 AU
i 5.238261334500849 6.9707e-06 deg
node 60.05255186314948 6.7052e-05 deg
peri 40.80142531998543 9.444e-05 deg
M 309.9485627956284 6.5866e-05 deg
tp 2457215.528952518136
(2015-Jul-12.02895252)
0.00028327 JED
period 1546.617384640612
4.23
1.9477e-05
5.333e-08
d
yr
n .2327660374021034 2.9313e-09 deg/d
Q 2.758154830017583 2.3156e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      673  
   data-arc span      10012 days (27.41 yr)  
   first obs. used      1987-06-02  
   last obs. used      2014-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56753  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-10 13:52:41  

Additional Information
 Earth MOID = 1.49584 AU 
 T_jup = 3.399 
[ 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 14.5 mag n/a MPO313639  

28241 (1999 AC22)          Discovered 1999-Jan-10 by Beijing Schmidt CCD Asteroid Program at Xinglong (327)
Reference: 20010902/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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