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JPL Small-Body Database Browser
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233878 (2008 WQ81)
Classification: Outer Main-belt Asteroid          SPK-ID: 2233878
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .316802435402893 9.9836e-08  
a 3.908984833622586 7.0045e-08 au
q 2.670608918377979 4.1599e-07 au
i 4.002824049492833 1.7551e-05 deg
node 174.0605150296368 0.00012899 deg
peri 230.8763279482484 0.00013523 deg
M 137.8804198455597 3.3259e-05 deg
tp 2457519.328718180197
(2016-May-10.82871818)
0.0002408 TDB
period 2822.892923383156
7.73
7.5875e-05
2.077e-07
d
yr
n .1275287479089183 3.4278e-09 deg/d
Q 5.147360748867194 9.2235e-08 au
  Orbit Determination Parameters
   # obs. used (total)      174  
   data-arc span      9302 days (25.47 yr)  
   first obs. used      1992-09-29  
   last obs. used      2018-03-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59238  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 11:38:42  

Additional Information
 Earth MOID = 1.68168 au 
 Jupiter MOID = .328631 au 
 T_jup = 2.971 
[ 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 15.4   n/a MPO360204  

233878 (2008 WQ81)          Discovered 2008-Nov-20 by Spacewatch at Kitt Peak
Reference: 20100228/Numbers.arcLast Updated: 2010-03-03

[ show close-approach data ]
Alternate Designations
 2008 WQ81 = 2000 UQ89 = 2007 RD263 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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