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206241 Dubois (2002 WM28)
Classification: Main-belt Asteroid          SPK-ID: 2206241
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1620903827837115 4.2488e-08  
a 3.116990826533985 2.4165e-08 au
q 2.611756590327774 1.3216e-07 au
i 5.521069192492594 4.5196e-06 deg
node 135.7365827386833 5.368e-05 deg
peri 303.8618726171579 5.6403e-05 deg
M 126.4826901237323 1.7639e-05 deg
tp 2458690.295783591701
(2019-Jul-25.79578359)
9.4973e-05 TDB
period 2010.026175584046
5.50
2.3375e-05
6.4e-08
d
yr
n .1791021452222611 2.0828e-09 deg/d
Q 3.622225062740196 2.8082e-08 au
  Orbit Determination Parameters
   # obs. used (total)      418  
   data-arc span      6774 days (18.55 yr)  
   first obs. used      2002-10-31  
   last obs. used      2021-05-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58798  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 03:20:39  

Additional Information
 Earth MOID = 1.63244 au 
 Jupiter MOID = 1.64334 au 
 T_jup = 3.190 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.03   n/a E2021B55  

206241 Dubois           Discovered 2002 Nov. 24 by NEAT at Palomar.
Dutch anatomist, surgeon and paleontologist Marie Eugène François Thomas Dubois (1858-1940) was the "founding father" of palaeoanthropology. His dedicated search culminated in 1891 with the discovery of the first Homo erectus fossils in a bank of the Solo river near Trinil, Java. The name was suggested by M. Langbroek.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20090607/MPCPages.arcLast Updated: 2009-06-08

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