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10838 Lebon (1994 EH7)
Classification: Main-belt Asteroid          SPK-ID: 2010838
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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1651871525054795 2.4392e-08  
a 2.642327231660791 1.0113e-08 au
q 2.205848720275059 6.7507e-08 au
i 12.83440295524845 6.1838e-07 deg
node 10.06476953969138 3.6147e-06 deg
peri 277.2518223536144 4.3228e-06 deg
M 26.72098223599557 6.1126e-06 deg
tp 2459280.053015834227
(2021-Mar-06.55301583)
2.6329e-05 TDB
period 1568.838822219906
4.30
9.0063e-06
2.466e-08
d
yr
n .2294690792331364 1.3173e-09 deg/d
Q 3.078805743046524 1.1783e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2470  
   data-arc span      11409 days (31.24 yr)  
   first obs. used      1990-04-01  
   last obs. used      2021-06-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45299  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 02:29:59  

Additional Information
 Earth MOID = 1.23442 au 
 Jupiter MOID = 2.24133 au 
 T_jup = 3.340 
[ 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 13.26   n/a MPCxxxxx  
diameter diameter 6.413 km 0.142 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.225   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

10838 Lebon           Discovered 1994 Mar. 9 by E. W. Elst at Caussols.
Gustave Le Bon (1841-1931) was a French social psychologist who became famous through his book La psychologie des foules (1895): "Crowd behavior is unanimous, emotional and intellectually weak". Freud's Massa und Ich-analyse (1920) owes much to his ideas.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000523/MPCPages.arcLast Updated: 2013-03-29

Alternate Designations
 1994 EH7 = 1991 RJ23 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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