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233877 (2008 WY78)
Classification: Main-belt Asteroid          SPK-ID: 2233877
[ 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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1712660127161109 4.9835e-08  
a 2.565406202675947 1.8707e-08 au
q 2.126039311346458 1.2647e-07 au
i 6.242781196617424 5.1517e-06 deg
node 110.3863212541628 4.7964e-05 deg
peri 176.6725184080199 5.0362e-05 deg
M 51.94324060784612 1.5636e-05 deg
tp 2458783.949506667958
(2019-Oct-27.44950667)		 6.5029e-05 TDB
period 1500.833923476071
4.11		 1.6416e-05
4.494e-08		 d
yr
n .2398666463816373 2.6237e-09 deg/d
Q 3.004773094005436 2.1911e-08 au
   Orbit Determination Parameters
   # obs. used (total)      369  
   data-arc span      6808 days (18.64 yr)  
   first obs. used      2002-03-05  
   last obs. used      2020-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56228  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 01:50:59  

Additional Information
 Earth MOID = 1.10969 au 
 Jupiter MOID = 2.16213 au 
 T_jup = 3.404 
[ 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 16.3   n/a MPO437098  
diameter diameter 2.976 km 0.884 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.060   0.049 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

233877 (2008 WY78)          Discovered 2008-Nov-20 by Spacewatch at Kitt Peak
Reference: 20100228/Numbers.arcLast Updated: 2010-03-03

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