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233871 (2008 WQ23)
Classification: Main-belt Asteroid          SPK-ID: 2233871
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06606838281259735 5.3889e-08  
a 2.710547689277613 2.5398e-08 au
q 2.531466186910619 1.5053e-07 au
i 3.956038893626484 5.0496e-06 deg
node 286.457925262449 8.8348e-05 deg
peri 46.54021336042478 9.7117e-05 deg
M 287.2827736580488 4.2655e-05 deg
tp 2459329.744713358045
(2021-Apr-25.24471336)
0.00019483 TDB
period 1629.986493867633
4.46
2.291e-05
6.272e-08
d
yr
n .2208607257510409 3.1042e-09 deg/d
Q 2.889629191644608 2.7076e-08 au
  Orbit Determination Parameters
   # obs. used (total)      315  
   data-arc span      5679 days (15.55 yr)  
   first obs. used      2003-09-16  
   last obs. used      2019-04-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56373  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 11:34:56  

Additional Information
 Earth MOID = 1.52263 au 
 Jupiter MOID = 2.34708 au 
 T_jup = 3.357 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457049.5 (2015-Jan-27.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06504345745915774 5.3947e-08  
q 2.533710947542317 1.502e-07 au
tp 2457704.360854018978
(2016-Nov-11.86085402)
0.00018972 TDB
node 286.4813999226991 8.837e-05 deg
peri 47.42719088807686 9.7361e-05 deg
i 3.955531271270977 5.049e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      315  
   data-arc span      5679 days (15.55 yr)  
   first obs. used      2003-09-16  
   last obs. used      2019-04-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56373  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 11:34:56  

Additional Information
 Jupiter MOID = 2.34708 au 
 T_jup = 3.357 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.910238762345956E-15 -7.999564519718246E-15 1.547064432698985E-12 2.911020004328772E-15 3.640276179055155E-13 5.62443278112364E-16
q -7.999564519718246E-15 2.256109275196733E-14 -2.99418171771499E-12 -1.242935000719419E-14 -7.783395818710452E-13 -1.090856512176701E-15
tp 1.547064432698985E-12 -2.99418171771499E-12 3.599443030979526E-8 -1.262875598243523E-11 7.791449518817672E-9 2.893424920676607E-12
node 2.911020004328772E-15 -1.242935000719419E-14 -1.262875598243523E-11 7.809315456483841E-9 -7.793023888000672E-9 4.8149068532558E-11
peri 3.640276179055155E-13 -7.783395818710452E-13 7.791449518817672E-9 -7.793023888000672E-9 9.479121976818388E-9 -4.748067224399052E-11
i 5.62443278112364E-16 -1.090856512176701E-15 2.893424920676607E-12 4.8149068532558E-11 -4.748067224399052E-11 2.549284872920195E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.0   n/a MPO437098  
diameter diameter 3.965 km 1.641 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.045   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

233871 (2008 WQ23)          Discovered 2008-Nov-18 by CSS at Catalina
Reference: 20100228/Numbers.arcLast Updated: 2010-03-03
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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