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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02502531419290339 7.8823e-08  
a 2.651903935664879 1.4132e-08 AU
q 2.585539206465468 2.0768e-07 AU
i 5.323680551864752 8.5905e-06 deg
node 341.9023557006892 7.2912e-05 deg
peri 330.4953884303619 0.00019794 deg
M 202.2374147639881 0.00019004 deg
tp 2457491.752352389423
(2016-Apr-13.25235239)
0.00083447 JED
period 1577.375563971094
4.32
1.2609e-05
3.452e-08
d
yr
n .228227194729509 1.8243e-09 deg/d
Q 2.718268664864289 1.4486e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      731  
   data-arc span      19542 days (53.50 yr)  
   first obs. used      1960-09-24  
   last obs. used      2014-03-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5625  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 14:01:43  

Additional Information
 Earth MOID = 1.57224 AU 
 T_jup = 3.383 
[ 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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