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21423 Credo (1998 FJ79)
Classification: Main-belt Asteroid          SPK-ID: 2021423
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05522556710330336 2.9724e-08  
a 2.415525793588235 8.2834e-09 au
q 2.282127011784668 7.2581e-08 au
i 7.300165062989898 3.7138e-06 deg
node 154.4921138200044 2.4231e-05 deg
peri 150.9308154087522 4.1049e-05 deg
M 329.6217618328213 3.4322e-05 deg
tp 2459512.211367930169
(2021-Oct-24.71136793)
0.00013089 TDB
period 1371.247806591596
3.75
7.0535e-06
1.931e-08
d
yr
n .2625346040806614 1.3504e-09 deg/d
Q 2.548924575391802 8.7408e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1516  
   data-arc span      9965 days (27.28 yr)  
   first obs. used      1994-03-10  
   last obs. used      2021-06-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50985  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 05:08:02  

Additional Information
 Earth MOID = 1.26996 au 
 Jupiter MOID = 2.57922 au 
 T_jup = 3.504 
[ 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 15.00   n/a E2021B10  
diameter diameter 2.338 km 0.463 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.426   0.254 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21423 Credo           Discovered 1998 Mar. 24 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Timothy Frank Credo (b. 1987) is a finalist in the 2005 Intel Science Talent Search, a science competition for high school seniors, for his engineering project. He attends the Illinois Mathematics and Science Academy, Aurora, Illinois.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050224/MPCPages.arcLast Updated: 2005-02-28

Alternate Designations
 1998 FJ79 = 1999 RN171 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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