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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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05381005334509846 5.4495e-08  
a 2.617316890155891 1.9925e-08 AU
q 2.476478928675576 1.4696e-07 AU
i 5.238261455733038 6.9176e-06 deg
node 60.05257990188656 6.0531e-05 deg
peri 40.80140174613154 8.9506e-05 deg
M 309.9485567579955 6.4711e-05 deg
tp 2457215.528978959979
(2015-Jul-12.02897896)
0.0002781 JED
period 1546.617388259994
4.23
1.7661e-05
4.835e-08
d
yr
n .2327660368573861 2.6579e-09 deg/d
Q 2.758154851636207 2.0997e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      834  
   data-arc span      10143 days (27.77 yr)  
   first obs. used      1987-06-02  
   last obs. used      2015-03-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54207  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 17:27:24  

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
Reference: 20010902/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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