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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02550240356288019 5.2387e-08  
a 2.651595211113949 1.8789e-08 au
q 2.583973159954721 1.4386e-07 au
i 5.324194537953681 6.3309e-06 deg
node 341.9001712697086 6.8503e-05 deg
peri 330.5126748617182 0.00015962 deg
M 339.220801957129 0.00014726 deg
tp 2457491.530210578183
(2016-Apr-13.03021058)
0.00064524 JED
period 1577.100123909212
4.32
1.6763e-05
4.589e-08
d
yr
n .2282670545403646 2.4263e-09 deg/d
Q 2.719217262273178 1.9269e-08 au
  Orbit Determination Parameters
   # obs. used (total)      852  
   data-arc span      20047 days (54.89 yr)  
   first obs. used      1960-09-24  
   last obs. used      2015-08-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52563  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 14:34:57  

Additional Information
 Earth MOID = 1.56971 au 
 Jupiter MOID = 2.3501 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 14.3 mag n/a MPO337361  

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

[ show close-approach data ]
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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