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266909 (2009 WP220)
Classification: Main-belt Asteroid          SPK-ID: 2266909
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03553217356621481 5.6129e-08  
a 2.969408199410945 3.8934e-08 au
q 2.863898671880534 1.8431e-07 au
i 1.713753908634195 5.981e-06 deg
node 128.5348274471886 0.00018958 deg
peri 277.6872417571013 0.00021143 deg
M 26.33058848341462 9.0993e-05 deg
tp 2458863.802256122892
(2020-Jan-15.30225612)
0.00047304 TDB
period 1868.974095537453
5.12
3.6758e-05
1.006e-07
d
yr
n .1926190421042066 3.7883e-09 deg/d
Q 3.074917726941357 4.0317e-08 au
  Orbit Determination Parameters
   # obs. used (total)      164  
   data-arc span      8662 days (23.72 yr)  
   first obs. used      1996-03-11  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .67436  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 19:34:57  

Additional Information
 Earth MOID = 1.8734 au 
 Jupiter MOID = 2.06401 au 
 T_jup = 3.262 
[ 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 16.8   n/a MPO454984  

266909 (2009 WP220)          Discovered 2009-Nov-16 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22

Alternate Designations
 2009 WP220 = 2006 BE166 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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