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233869 (2008 WE20)
Classification: Main-belt Asteroid          SPK-ID: 2233869
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 .06915821866017965 6.2884e-08  
a 2.77094277429575 2.6408e-08 au
q 2.579309308016159 1.8193e-07 au
i 1.137462239443034 8.662e-06 deg
node 59.98252641067145 0.00034272 deg
peri 265.2618467245354 0.00035084 deg
M 265.5098395239779 7.6129e-05 deg
tp 2459442.705202661733
(2021-Aug-16.20520266)
0.00035541 TDB
period 1684.766669420793
4.61
2.4085e-05
6.594e-08
d
yr
n .2136794409185248 3.0547e-09 deg/d
Q 2.96257624057534 2.8235e-08 au
  Orbit Determination Parameters
   # obs. used (total)      216  
   data-arc span      6978 days (19.10 yr)  
   first obs. used      2001-03-21  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6695  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 11:14:06  

Additional Information
 Earth MOID = 1.56751 au 
 Jupiter MOID = 2.25295 au 
 T_jup = 3.334 
[ 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 16.5   n/a MPO427345  

233869 (2008 WE20)          Discovered 2008-Nov-17 by Spacewatch at Kitt Peak
Reference: 20100228/Numbers.arcLast Updated: 2010-03-03

[ show close-approach data ]
Alternate Designations
 2008 WE20 = 2006 FZ18 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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