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8237 Constable (7581 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2008237
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1067803723888852 3.59e-08  
a 2.240091142439938 7.0985e-09 au
q 2.000893376065158 8.2097e-08 au
i 5.514526721589364 3.9533e-06 deg
node 35.19379539017108 3.3042e-05 deg
peri 306.7170661513882 3.6826e-05 deg
M 307.0890012189734 1.6225e-05 deg
tp 2459180.486701886241
(2020-Nov-26.98670189)
5.5202e-05 TDB
period 1224.607627370698
3.35
5.8209e-06
1.594e-08
d
yr
n .2939717113904805 1.3973e-09 deg/d
Q 2.479288908814718 7.8565e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1902  
   data-arc span      21793 days (59.67 yr)  
   first obs. used      1960-10-17  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47316  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:47:13  

Additional Information
 Earth MOID = .999008 au 
 Jupiter MOID = 2.85677 au 
 T_jup = 3.622 
[ 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 14.5   n/a MPO435777  
diameter diameter 3.880 km 0.046 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.240   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

8237 Constable           Discovered 1960 Oct. 17 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Named for the English painter John Constable (1776-1837), known for his landscapes painted directly from nature. A forerunner of the Impressionists of the late nineteenth century, he is notable for his use of color. For some time he made portraits, but later he went back to landscape painting.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990402/MPCPages.arcLast Updated: 2010-06-11

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Alternate Designations
 7581 P-L = 1976 JM9 = 1987 UU6 = 1990 SA17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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