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249345 (2008 WU61)
Classification: Main-belt Asteroid          SPK-ID: 2249345
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .111219164652926 5.5444e-08  
a 2.38898228105593 1.5986e-08 au
q 2.123281667386248 1.3493e-07 au
i 14.2561272521917 6.2354e-06 deg
node 76.64348516092751 1.9085e-05 deg
peri 357.1055191199903 3.5738e-05 deg
M 38.94881442552355 2.6294e-05 deg
tp 2458854.581767096266
(2020-Jan-06.08176710)
9.8862e-05 TDB
period 1348.707646693362
3.69
1.3537e-05
3.706e-08
d
yr
n .2669221909452469 2.6792e-09 deg/d
Q 2.654682894725612 1.7764e-08 au
  Orbit Determination Parameters
   # obs. used (total)      310  
   data-arc span      5587 days (15.30 yr)  
   first obs. used      2004-10-11  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58026  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 10:22:01  

Additional Information
 Earth MOID = 1.13845 au 
 Jupiter MOID = 2.60945 au 
 T_jup = 3.483 
[ 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 16.7   n/a MPO454848  
diameter diameter 2.194 km 0.327 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.065   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249345 (2008 WU61)          Discovered 2008-Nov-22 by La Sagra at La Sagra
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

Alternate Designations
 2008 WU61 = 2004 TF356 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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