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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2013884073567829 6.8936e-08  
a 2.645803827509303 2.6812e-08 au
q 2.112969608508724 1.8787e-07 au
i 14.76180599137154 7.8867e-06 deg
node 132.2473244605978 2.4888e-05 deg
peri 212.8679160677357 3.0034e-05 deg
M 134.1157968041836 1.7063e-05 deg
tp 2457014.884826612451
(2014-Dec-23.38482661)
7.1923e-05 JED
period 1571.936098827556
4.30
2.3895e-05
6.542e-08
d
yr
n .2290169430350951 3.4812e-09 deg/d
Q 3.178638046509882 3.2212e-08 au
  Orbit Determination Parameters
   # obs. used (total)      521  
   data-arc span      12874 days (35.25 yr)  
   first obs. used      1980-10-14  
   last obs. used      2016-01-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .62283  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 19:28:41  

Additional Information
 Earth MOID = 1.11732 au 
 Jupiter MOID = 2.2332 au 
 T_jup = 3.317 
[ 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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