Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
12137 Williefowler (4004 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2012137
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02552692008774609 3.5888e-08  
a 2.651594198088954 1.15e-08 au
q 2.583907164889206 9.9071e-08 au
i 5.327406962549288 4.0096e-06 deg
node 341.7915500720164 3.6852e-05 deg
peri 326.2911432796565 9.3582e-05 deg
M 34.26499240047092 8.386e-05 deg
tp 2459050.390853354259
(2020-Jul-19.89085335)
0.00036766 TDB
period 1577.099220127772
4.32
1.026e-05
2.809e-08
d
yr
n .22826718535238 1.485e-09 deg/d
Q 2.719281231288702 1.1793e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1542  
   data-arc span      22019 days (60.28 yr)  
   first obs. used      1960-09-24  
   last obs. used      2021-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4923  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:04:16  

Additional Information
 Earth MOID = 1.56949 au 
 Jupiter MOID = 2.34401 au 
 T_jup = 3.383 
[ 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 14.36   n/a E2021B10  

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 | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-11 08:25 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin