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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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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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1619819671908486 4.2638e-08  
a 3.117748118873765 2.4452e-08 au
q 2.612729145373025 1.3296e-07 au
i 5.520992991641521 4.8398e-06 deg
node 135.7349606215191 5.3675e-05 deg
peri 303.9455547698263 5.6616e-05 deg
M 91.30079887205356 1.7781e-05 deg
tp 2458690.544779048144
(2019-Jul-26.04477905)
9.7052e-05 TDB
period 2010.758742647341
5.51
2.3655e-05
6.476e-08
d
yr
n .1790368940661814 2.1062e-09 deg/d
Q 3.622767092374505 2.8412e-08 au
  Orbit Determination Parameters
   # obs. used (total)      402  
   data-arc span      6757 days (18.50 yr)  
   first obs. used      2002-10-31  
   last obs. used      2021-05-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59214  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:34:29  

Additional Information
 Earth MOID = 1.63311 au 
 Jupiter MOID = 1.64185 au 
 T_jup = 3.190 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457713.5 (2016-Nov-21.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1620155764702065 4.251e-08  
q 2.611764982029405 1.3241e-07 au
tp 2458692.156741836345
(2019-Jul-27.65674184)
9.7055e-05 TDB
node 135.7465719689623 5.3679e-05 deg
peri 304.3641023276938 5.6632e-05 deg
i 5.521124082323266 4.84e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      402  
   data-arc span      6757 days (18.50 yr)  
   first obs. used      2002-10-31  
   last obs. used      2021-05-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59214  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:34:29  

Additional Information
 Jupiter MOID = 1.64185 au 
 T_jup = 3.190 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.80710254679004E-15 -5.56250276585774E-15 -6.027930528283837E-13 -1.204707414892318E-14 -1.839500677803863E-13 -8.426694014588718E-16
q -5.56250276585774E-15 1.753262597483181E-14 2.556922402265038E-12 3.552508827755475E-14 6.553091509007932E-13 2.864749869225557E-15
tp -6.027930528283837E-13 2.556922402265038E-12 9.419613447037143E-9 -1.13839106439992E-11 1.773053196833631E-9 -1.162292391704966E-12
node -1.204707414892318E-14 3.552508827755475E-14 -1.13839106439992E-11 2.881423889857533E-9 -2.869064418694712E-9 6.409672751673091E-11
peri -1.839500677803863E-13 6.553091509007932E-13 1.773053196833631E-9 -2.869064418694712E-9 3.207135263248287E-9 -6.397585939296199E-11
i -8.426694014588718E-16 2.864749869225557E-15 -1.162292391704966E-12 6.409672751673091E-11 -6.397585939296199E-11 2.342548025017197E-11

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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