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233868 (2008 WH15)
Classification: Main-belt Asteroid          SPK-ID: 2233868
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1454582322935021 8.0334e-08  
a 2.907234829274719 2.3026e-08 au
q 2.484353590146317 2.3504e-07 au
i 6.943452471436446 4.5648e-06 deg
node 213.0420804563249 5.3178e-05 deg
peri 311.5442805711376 5.5555e-05 deg
M 8.150932511026269 1.4407e-05 deg
tp 2458959.505707764848
(2020-Apr-20.00570776)
7.2484e-05 TDB
period 1810.583658334906
4.96
2.151e-05
5.889e-08
d
yr
n .1988309119784458 2.3621e-09 deg/d
Q 3.330116068403121 2.6375e-08 au
  Orbit Determination Parameters
   # obs. used (total)      516  
   data-arc span      7879 days (21.57 yr)  
   first obs. used      1998-09-27  
   last obs. used      2020-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51016  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 11:14:06  

Additional Information
 Earth MOID = 1.4978 au 
 Jupiter MOID = 1.68858 au 
 T_jup = 3.258 
[ 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 15.6   n/a MPO503133  
diameter diameter 4.210 km 0.216 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.069   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

233868 (2008 WH15)          Discovered 2008-Nov-17 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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