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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3165302721639165 1.0055e-07  
a 3.909388704569817 7.1067e-08 au
q 2.671948833917792 4.1999e-07 au
i 4.002335989543834 1.7549e-05 deg
node 174.0546063277471 0.000129 deg
peri 230.8015950065355 0.00013526 deg
M 189.0437421080479 3.4258e-05 deg
tp 2460341.238898708907
(2024-Jan-31.73889871)
0.00029739 TDB
period 2823.330420815957
7.73
7.6986e-05
2.108e-07
d
yr
n .1275089863183488 3.4769e-09 deg/d
Q 5.146828575221842 9.3562e-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 = 1.68352 au 
 Jupiter MOID = .330872 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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