Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
204786 Wehlau (2006 KU131)
Classification: Main-belt Asteroid          SPK-ID: 2204786
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04973054892304666 5.4362e-08  
a 2.58614671461652 1.726e-08 au
q 2.457536218903106 1.455e-07 au
i .3882594842402217 5.8204e-06 deg
node 287.2972875588795 0.00081389 deg
peri 85.82152763575047 0.00081605 deg
M 58.892298496012 5.837e-05 deg
tp 2458951.995550325938
(2020-Apr-12.49555033)
0.00024622 TDB
period 1519.071324559026
4.16
1.5208e-05
4.164e-08
d
yr
n .2369868973101083 2.3725e-09 deg/d
Q 2.714757210329933 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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57288  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:07:02  

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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-16 14:03 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin