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12137 Williefowler (4004 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2012137
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02531256627446481 7.6704e-08  
a 2.651100225148999 2.3565e-08 AU
q 2.583994074999667 1.9705e-07 AU
i 5.324265916288484 8.0955e-06 deg
node 341.9029226605415 6.9021e-05 deg
peri 330.8396820676915 0.0001941 deg
M 247.5579339895223 0.00018846 deg
tp 2457492.952064791214
(2016-Apr-14.45206479)
0.00082828 JED
period 1576.658537280141
4.32
2.1022e-05
5.756e-08
d
yr
n .2283309870132235 3.0444e-09 deg/d
Q 2.718206375298332 2.4162e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      754  
   data-arc span      19842 days (54.32 yr)  
   first obs. used      1960-09-24  
   last obs. used      2015-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5351  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 13:34:10  

Additional Information
 Earth MOID = 1.57262 AU 
 T_jup = 3.384 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.2 mag n/a MPO253449  

12137 Williefowler           Discovered 1960 Sept. 24 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
William Alfred Fowler (1911-1995) was a nuclear astrophysicist who measured in the laboratory at Caltech the nuclear reactions that occur at lower energies in stars. He also worked on theories of supernovae and early nucleosynthesis.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20071124/MPCPages.arcLast Updated: 2007-11-26

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Alternate Designations
 4004 P-L = 1987 YH5 = 1990 QM8 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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