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20430 Stout (1999 AC3)
Classification: Main-belt Asteroid          SPK-ID: 2020430
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2015869882600654 7.3535e-08  
a 2.645386612446607 2.9095e-08 au
q 2.112111092459999 2.0285e-07 au
i 14.76299590428865 8.0718e-06 deg
node 132.2466346546592 2.5546e-05 deg
peri 212.8399635847086 3.0583e-05 deg
M 88.32217409494724 1.6884e-05 deg
tp 2457014.933401519825
(2014-Dec-23.43340152)
7.1952e-05 JED
period 1571.564297133891
4.30
2.5927e-05
7.098e-08
d
yr
n .2290711240109889 3.7791e-09 deg/d
Q 3.178662132433215 3.496e-08 au
  Orbit Determination Parameters
   # obs. used (total)      510  
   data-arc span      12848 days (35.18 yr)  
   first obs. used      1980-10-14  
   last obs. used      2015-12-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .62722  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:45:16  

Additional Information
 Earth MOID = 1.11523 au 
 Jupiter MOID = 2.23239 au 
 T_jup = 3.318 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.5 mag n/a MPO309314  

20430 Stout           Discovered 1999 Jan. 10 by W. R. Cooney, Jr., and S. Lazar at Baton Rouge.
A music professor at Louisiana State University who was fascinated by the mysteries of space being revealed in his time and was always researching new ideas, Earl Douglas Stout (1895?--1985) was a great-grandfather of the second discoverer.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020624/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1999 AC3 = 1995 FR 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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