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18979 Henryfong (2000 RC2)
Classification: Main-belt Asteroid          SPK-ID: 2018979
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0263414125917231 3.5425e-08  
a 2.604307240211778 1.0595e-08 au
q 2.535706108681748 9.2655e-08 au
i 3.788905858201051 3.8777e-06 deg
node 180.9074585547415 5.0844e-05 deg
peri 19.67990895807973 8.3624e-05 deg
M 101.0752203471467 6.6089e-05 deg
tp 2458769.498332537277
(2019-Oct-12.99833254)
0.00028177 TDB
period 1535.100292175226
4.20
9.3679e-06
2.565e-08
d
yr
n .2345123649803249 1.4311e-09 deg/d
Q 2.672908371741809 1.0874e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1798  
   data-arc span      13987 days (38.29 yr)  
   first obs. used      1982-05-15  
   last obs. used      2020-08-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4684  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:43:29  

Additional Information
 Earth MOID = 1.53157 au 
 Jupiter MOID = 2.28134 au 
 T_jup = 3.409 
[ 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 14.04   n/a E2021B10  
diameter diameter 4.917 km 0.337 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.153   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18979 Henryfong           Discovered 2000 Sept. 1 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Henry Fong (b. 1987) was awarded fourth place in the 2003 Intel International Science and Engineering Fair for his chemistry team project. He attends the Alhambra High School, Alhambra, California, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040830/MPCPages.arcLast Updated: 2004-09-06

Alternate Designations
 2000 RC2 = 1982 JW2 = 1986 HW = 1999 NN50 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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