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379341 (2009 WT89)
Classification: Main-belt Asteroid          SPK-ID: 2379341
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04375519446226821 4.7299e-08  
a 3.032401973104268 4.2229e-08 au
q 2.899718635083326 1.5133e-07 au
i 12.67303887993673 5.7356e-06 deg
node 232.5527725192492 2.41e-05 deg
peri 233.3463220186154 7.4152e-05 deg
M 324.3668554295793 7.0214e-05 deg
tp 2459191.410683186928
(2020-Dec-07.91068319)
0.0003774 TDB
period 1928.761740672913
5.28
4.0289e-05
1.103e-07
d
yr
n .1866482481524141 3.8988e-09 deg/d
Q 3.165085311125212 4.4076e-08 au
  Orbit Determination Parameters
   # obs. used (total)      215  
   data-arc span      9532 days (26.10 yr)  
   first obs. used      1993-12-14  
   last obs. used      2020-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64375  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 03:10:08  

Additional Information
 Earth MOID = 1.93405 au 
 Jupiter MOID = 2.01167 au 
 T_jup = 3.204 
[ 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 MPO455730  
diameter diameter 3.974 km 0.703 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.049   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

379341 (2009 WT89)          Discovered 2009-Nov-19 by Spacewatch at Kitt Peak
Reference: Last Updated: 2013-11-20

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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