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359876 (2011 WA21)
Classification: Outer Main-belt Asteroid          SPK-ID: 2359876
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 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1175724417685756 8.322e-08  
a 3.254962948845142 6.4076e-08 au
q 2.872269007083175 2.4809e-07 au
i 13.26435966241785 1.0164e-05 deg
node 65.89608699374033 3.6063e-05 deg
peri 76.8826780904234 5.7994e-05 deg
M 99.75432257348163 4.5285e-05 deg
tp 2458406.143900633927
(2018-Oct-14.64390063)
0.00026658 TDB
period 2144.951619657102
5.87
6.3337e-05
1.734e-07
d
yr
n .1678359533617596 4.956e-09 deg/d
Q 3.637656890607108 7.161e-08 au
  Orbit Determination Parameters
   # obs. used (total)      100  
   data-arc span      4940 days (13.52 yr)  
   first obs. used      2005-10-28  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61476  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 09:31:04  

Additional Information
 Earth MOID = 1.92269 au 
 Jupiter MOID = 1.62243 au 
 T_jup = 3.128 
[ 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 16.1   n/a MPO434269  

359876 (2011 WA21)          Discovered 2005-Oct-28 by Spacewatch at Kitt Peak
Reference: 20130327/Numbers.arcLast Updated: 2013-03-29

[ show close-approach data ]
Alternate Designations
 2011 WA21 = 2005 UY272 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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