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70950 (1999 WU18)
Classification: Main-belt Asteroid          SPK-ID: 2070950
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1376587718198417 4.8943e-08  
a 2.651276344217495 1.8174e-08 au
q 2.286304898917515 1.3714e-07 au
i 2.222287012740068 5.285e-06 deg
node 60.09661831249026 0.00010658 deg
peri 216.3844821243415 0.00010812 deg
M 32.43730837511283 1.8304e-05 deg
tp 2458858.423179031992
(2020-Jan-09.92317903)
7.9706e-05 TDB
period 1576.815651810537
4.32
1.6213e-05
4.439e-08
d
yr
n .2283082360240649 2.3475e-09 deg/d
Q 3.016247789517475 2.0676e-08 au
  Orbit Determination Parameters
   # obs. used (total)      414  
   data-arc span      9602 days (26.29 yr)  
   first obs. used      1993-03-19  
   last obs. used      2019-07-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58017  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 16:18:10  

Additional Information
 Earth MOID = 1.27038 au 
 Jupiter MOID = 2.09448 au 
 T_jup = 3.376 
[ 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 16.2   n/a MPO432263  

70950 (1999 WU18)          Discovered 1999-Nov-30 by Spacewatch at Kitt Peak
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 WU18 = 1993 FG40 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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