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266893 (2009 WA76)
Classification: Outer Main-belt Asteroid          SPK-ID: 2266893
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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1927987986783664 5.5761e-08  
a 3.949988314454458 6.719e-08 au
q 3.188435312634053 2.247e-07 au
i 3.357369304352457 9.2554e-06 deg
node 162.0120798561004 0.00011808 deg
peri 298.9625245319315 0.00012164 deg
M 98.73866753882108 2.7426e-05 deg
tp 2458214.039519057907
(2018-Apr-05.53951906)
0.00020978 TDB
period 2867.425500023454
7.85
7.3163e-05
2.003e-07
d
yr
n .1255481615815495 3.2034e-09 deg/d
Q 4.711541316274863 8.0144e-08 au
  Orbit Determination Parameters
   # obs. used (total)      149  
   data-arc span      9215 days (25.23 yr)  
   first obs. used      1995-02-03  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58488  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 15:25:53  

Additional Information
 Earth MOID = 2.20718 au 
 Jupiter MOID = .52185 au 
 T_jup = 3.024 
[ 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 15.5   n/a MPO433732  
diameter diameter 5.242 km 0.373 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
geometric albedo albedo 0.053   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  

266893 (2009 WA76)          Discovered 2009-Nov-18 by Spacewatch at Kitt Peak
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22

[ show close-approach data ]
Alternate Designations
 2009 WA76 = 2004 GB89 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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