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JPL Small-Body Database Browser
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172038 (2001 WE51)
Classification: Main-belt Asteroid          SPK-ID: 2172038
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08818516739850051 6.8866e-08  
a 3.021950774641569 3.4544e-08 au
q 2.755459539709774 2.0866e-07 au
i 1.984356020302934 7.1552e-06 deg
node 352.7028100269849 0.00021367 deg
peri 55.34723099195357 0.00021754 deg
M 183.7333400646217 3.8929e-05 deg
tp 2459940.000855410281
(2022-Dec-26.50085541)
0.00020899 TDB
period 1918.799097184329
5.25
3.2901e-05
9.008e-08
d
yr
n .1876173490639373 3.217e-09 deg/d
Q 3.288442009573364 3.759e-08 au
  Orbit Determination Parameters
   # obs. used (total)      196  
   data-arc span      7984 days (21.86 yr)  
   first obs. used      1998-03-20  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60311  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 16:42:23  

Additional Information
 Earth MOID = 1.76589 au 
 Jupiter MOID = 2.03553 au 
 T_jup = 3.239 
[ 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 16.0   n/a MPO436855  

172038 (2001 WE51)          Discovered 2001-Nov-19 by LINEAR at Socorro
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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