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212947 (2009 AC28)
Classification: Main-belt Asteroid          SPK-ID: 2212947
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06999195572968438 5.9685e-08  
a 2.707670169666647 2.9906e-08 au
q 2.518155039020752 1.5775e-07 au
i 9.682234708519106 5.6955e-06 deg
node 158.5244754239047 3.9067e-05 deg
peri 24.47980508056726 6.1166e-05 deg
M 186.2175762934933 4.8172e-05 deg
tp 2459786.089041385708
(2022-Jul-25.58904139)
0.00022135 TDB
period 1627.391590397447
4.46
2.6961e-05
7.382e-08
d
yr
n .221212891921163 3.6649e-09 deg/d
Q 2.897185300312542 3.1999e-08 au
  Orbit Determination Parameters
   # obs. used (total)      235  
   data-arc span      8088 days (22.14 yr)  
   first obs. used      1996-04-21  
   last obs. used      2018-06-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58936  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 11:46:20  

Additional Information
 Earth MOID = 1.52509 au 
 Jupiter MOID = 2.06864 au 
 T_jup = 3.340 
[ show covariance matrix ]

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 16.3   n/a MPO446191  

212947 (2009 AC28)          Discovered 2009-Jan-03 by Spacewatch at Kitt Peak
Reference: 20090409/Numbers.arcLast Updated: 2009-04-10

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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