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249404 (2009 CE20)
Classification: Main-belt Asteroid          SPK-ID: 2249404
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 .03060963199671326 7.7907e-08  
a 3.115699267824587 4.312e-08 au
q 3.020328859824047 2.5367e-07 au
i 7.068228388527719 7.5556e-06 deg
node 296.5725082022365 5.4995e-05 deg
peri 191.093738977091 0.00017287 deg
M 28.31156064931132 0.00015725 deg
tp 2458842.523301076570
(2019-Dec-25.02330108)
0.00087877 TDB
period 2008.776991028162
5.50
4.1701e-05
1.142e-07
d
yr
n .1792135222614928 3.7203e-09 deg/d
Q 3.211069675825126 4.444e-08 au
  Orbit Determination Parameters
   # obs. used (total)      168  
   data-arc span      8455 days (23.15 yr)  
   first obs. used      1996-12-08  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52269  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 10:22:50  

Additional Information
 Earth MOID = 2.03591 au 
 Jupiter MOID = 1.84288 au 
 T_jup = 3.205 
[ 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 15.9   n/a MPO418331  
diameter diameter 4.568 km 0.610 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.037   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249404 (2009 CE20)          Discovered 2009-Feb-01 by Spacewatch at Kitt Peak
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

[ show close-approach data ]
Alternate Designations
 2009 CE20 = 2006 RW24 = 2007 VK287 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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