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332923 (2011 CH20)
Classification: Main-belt Asteroid          SPK-ID: 2332923
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07298400940906148 4.995e-08  
a 2.720884645277247 3.5855e-08 au
q 2.522303574725361 1.4311e-07 au
i 6.079335161994257 5.6703e-06 deg
node 96.69670002827199 6.5355e-05 deg
peri 180.3089446584668 8.1492e-05 deg
M 258.4754095949357 4.8323e-05 deg
tp 2459462.809019899472
(2021-Sep-05.30901990)
0.00022006 TDB
period 1639.319562874178
4.49
3.2404e-05
8.872e-08
d
yr
n .2196033086854775 4.3408e-09 deg/d
Q 2.919465715829133 3.8472e-08 au
  Orbit Determination Parameters
   # obs. used (total)      197  
   data-arc span      6687 days (18.31 yr)  
   first obs. used      2002-01-06  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5016  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 21:31:54  

Additional Information
 Earth MOID = 1.50588 au 
 Jupiter MOID = 2.16151 au 
 T_jup = 3.347 
[ 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 16.4   n/a MPO423234  

332923 (2011 CH20)          Discovered 2009-Oct-12 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20120703/Numbers.arcLast Updated: 2012-07-09

Alternate Designations
 2011 CH20 = 2009 WJ112 = 2010 CH212 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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