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123438 (2000 WU121)
Classification: Main-belt Asteroid          SPK-ID: 2123438
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0206129862705968 4.7137e-08  
a 2.63203883954586 1.9007e-08 au
q 2.577784659082623 1.2563e-07 au
i 12.13799536795759 5.3461e-06 deg
node 138.7143530128944 2.6926e-05 deg
peri 153.1569969855498 0.00015465 deg
M 327.0316293439197 0.00015286 deg
tp 2459143.334082943136
(2020-Oct-20.83408294)
0.000662 TDB
period 1559.684899079034
4.27
1.6894e-05
4.625e-08
d
yr
n .2308158527485735 2.5002e-09 deg/d
Q 2.686293020009097 1.9398e-08 au
  Orbit Determination Parameters
   # obs. used (total)      540  
   data-arc span      9152 days (25.06 yr)  
   first obs. used      1995-07-24  
   last obs. used      2020-08-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59715  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:35:14  

Additional Information
 Earth MOID = 1.5662 au 
 Jupiter MOID = 2.38718 au 
 T_jup = 3.367 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.5   n/a MPO436597  

123438 (2000 WU121)          Discovered 2000-Nov-29 by LINEAR at Socorro
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

Alternate Designations
 2000 WU121 = 2002 CZ96 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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