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204786 Wehlau (2006 KU131)
Classification: Main-belt Asteroid          SPK-ID: 2204786
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04973054901433904 5.4362e-08  
a 2.586146715047684 1.726e-08 au
q 2.457536219076733 1.455e-07 au
i .3882594803555391 5.8204e-06 deg
node 287.297285895956 0.00081389 deg
peri 85.82152926238359 0.00081605 deg
M 58.89229853225919 5.837e-05 deg
tp 2458951.995550110841
(2020-Apr-12.49555011)
0.00024622 TDB
period 1519.071324938916
4.16
1.5208e-05
4.164e-08
d
yr
n .2369868972508424 2.3725e-09 deg/d
Q 2.714757211018635 1.8119e-08 au
  Orbit Determination Parameters
   # obs. used (total)      219  
   data-arc span      7721 days (21.14 yr)  
   first obs. used      1999-11-15  
   last obs. used      2021-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57293  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 12:29:54  

Additional Information
 Earth MOID = 1.45573 au 
 Jupiter MOID = 2.49821 au 
 T_jup = 3.420 
[ 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 17.1   n/a MPO494146  

204786 Wehlau           Discovered 2006 May 25 by P. A. Wiegert at Mauna Kea.
William Henry Wehlau (1926-1995) was an American-born Canadian astronomer who pioneered the field of stellar surface mapping using observed rotational variability of surface abundances and magnetic field strength. He served on the Board of the Canada-France-Hawaii Telescope from 1974 to 1985.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2013-04-25Last Updated: 2013-04-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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