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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 ]

[ show orbit diagram ]
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457299.5 (2015-Oct-04.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1639215972752293 2.4466e-08  
q 2.209563734540411 6.7554e-08 au
tp 2457710.755742347324
(2016-Nov-18.25574235)
2.3668e-05 TDB
node 10.11343799798215 3.6156e-06 deg
peri 276.9152299991715 4.3167e-06 deg
i 12.83042554631777 6.1806e-07 deg
  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
 Jupiter MOID = 2.24133 au 
 T_jup = 3.340 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.985676833685205E-16 -1.640999322118849E-15 -4.200833523178722E-13 -8.294963202002962E-15 -3.487125911649979E-14 1.417034730051923E-15
q -1.640999322118849E-15 4.563521307731015E-15 1.132237114784381E-12 2.311675633338184E-14 8.70366253199463E-14 -3.892256883161073E-15
tp -4.200833523178722E-13 1.132237114784381E-12 5.601633590348127E-10 2.52834352680308E-11 5.949639991174438E-11 -3.648518396656034E-12
node -8.294963202002962E-15 2.311675633338184E-14 2.52834352680308E-11 1.307279868780039E-11 -8.358610075023226E-12 -1.637655791851427E-12
peri -3.487125911649979E-14 8.70366253199463E-14 5.949639991174438E-11 -8.358610075023226E-12 1.863386345223401E-11 9.83734075580932E-13
i 1.417034730051923E-15 -3.892256883161073E-15 -3.648518396656034E-12 -1.637655791851427E-12 9.83734075580932E-13 3.820037196718966E-13

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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