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266904 (2009 WE175)
Classification: Main-belt Asteroid          SPK-ID: 2266904
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04827988975256548 4.9176e-08  
a 3.011798498835952 3.345e-08 au
q 2.86638919935521 1.5694e-07 au
i 6.121124014400332 5.6626e-06 deg
node 349.8417679731044 5.2585e-05 deg
peri 95.06488853170241 8.0066e-05 deg
M 341.4287942685952 6.1099e-05 deg
tp 2459098.986090026910
(2020-Sep-06.48609003)
0.00032433 TDB
period 1909.137883801031
5.23
3.1805e-05
8.708e-08
d
yr
n .1885667887346364 3.1414e-09 deg/d
Q 3.157207798316695 3.5065e-08 au
  Orbit Determination Parameters
   # obs. used (total)      221  
   data-arc span      9510 days (26.04 yr)  
   first obs. used      1993-10-12  
   last obs. used      2019-10-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55106  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 04:07:12  

Additional Information
 Earth MOID = 1.89102 au 
 Jupiter MOID = 1.94729 au 
 T_jup = 3.239 
[ 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 16.0   n/a MPO454984  
diameter diameter 3.908 km 0.110 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.046   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

266904 (2009 WE175)          Discovered 2009-Nov-23 by Spacewatch at Kitt Peak
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22

[ show close-approach data ]
Alternate Designations
 2009 WE175 = 2006 DZ81 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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