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JPL Small-Body Database Browser
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233870 (2008 WT22)
Classification: Main-belt Asteroid          SPK-ID: 2233870
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02106639605101862 6.6787e-08  
a 2.746815376437281 2.8549e-08 au
q 2.688949875838225 1.8981e-07 au
i 2.37663780214872 7.8234e-06 deg
node 39.57756531302192 0.00015793 deg
peri 27.32407013402154 0.00025425 deg
M 175.3047362377245 0.00019738 deg
tp 2458190.782024540290
(2018-Mar-13.28202454)
0.00091095 TDB
period 1662.810015413417
4.55
2.5924e-05
7.098e-08
d
yr
n .2165009812684432 3.3753e-09 deg/d
Q 2.804680877036336 2.915e-08 au
  Orbit Determination Parameters
   # obs. used (total)      222  
   data-arc span      7061 days (19.33 yr)  
   first obs. used      1999-11-09  
   last obs. used      2019-03-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60236  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 11:34:43  

Additional Information
 Earth MOID = 1.70202 au 
 Jupiter MOID = 2.23716 au 
 T_jup = 3.346 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456861.5 (2014-Jul-23.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0218518703771398 6.4136e-08  
q 2.688197695518717 1.8302e-07 au
tp 2456548.167614874121
(2013-Sep-12.66761487)
0.00090375 TDB
node 39.61421526447887 0.00015791 deg
peri 31.70481658747119 0.00025307 deg
i 2.376738977891659 7.8211e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      222  
   data-arc span      7061 days (19.33 yr)  
   first obs. used      1999-11-09  
   last obs. used      2019-03-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60236  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 11:34:43  

Additional Information
 Jupiter MOID = 2.23716 au 
 T_jup = 3.346 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.113484511163549E-15 -1.159980683368057E-14 -2.589608541799241E-11 2.29540145015113E-14 -5.810969763577302E-12 3.121448969384686E-16
q -1.159980683368057E-14 3.349776554837378E-14 7.135244733152153E-11 -6.524383845236212E-14 1.604728795121645E-11 -5.201449638871351E-16
tp -2.589608541799241E-11 7.135244733152153E-11 8.167618915608976E-7 -2.862463167888249E-10 1.787618788870816E-7 -3.515264002569048E-11
node 2.29540145015113E-14 -6.524383845236212E-14 -2.862463167888249E-10 2.49352815617168E-8 -2.497595811306226E-8 -4.656767019488829E-10
peri -5.810969763577302E-12 1.604728795121645E-11 1.787618788870816E-7 -2.497595811306226E-8 6.404439350676041E-8 4.576420864333208E-10
i 3.121448969384686E-16 -5.201449638871351E-16 -3.515264002569048E-11 -4.656767019488829E-10 4.576420864333208E-10 6.116987722311369E-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 16.3   n/a MPO470490  

233870 (2008 WT22)          Discovered 2008-Nov-18 by CSS at Catalina
Reference: 20100228/Numbers.arcLast Updated: 2010-03-03

Alternate Designations
 2008 WT22 = 1999 VN182 = 2004 XS98 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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