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

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1997026978785128 3.472e-08  
a 2.6475026628028 1.2677e-08 au
q 2.118789238400534 8.9645e-08 au
i 14.74841106382655 3.9006e-06 deg
node 132.084673119933 1.8348e-05 deg
peri 213.3462884400982 2.1843e-05 deg
M 94.03661264492628 1.2092e-05 deg
tp 2458589.494615797980
(2019-Apr-15.99461580)
5.216e-05 TDB
period 1573.450320583304
4.31
1.1302e-05
3.094e-08
d
yr
n .2287965468566824 1.6434e-09 deg/d
Q 3.176216087205065 1.5209e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1007  
   data-arc span      14352 days (39.29 yr)  
   first obs. used      1980-10-14  
   last obs. used      2020-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54879  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 23:06:38  

Additional Information
 Earth MOID = 1.1243 au 
 Jupiter MOID = 2.24767 au 
 T_jup = 3.317 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.6   n/a MPO400205  
diameter diameter 3.393 km 0.107 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.243   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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 | Mission Design | Physical Parameters | Discovery Circumstances ]
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