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7454 Kevinrighter (1981 EW20)
Classification: Main-belt Asteroid          SPK-ID: 2007454
[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

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Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB
Reference: MPO256919 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 0.1400535 n/a  
a 3.1743220 n/a AU
q 2.7297471 n/a AU
i 0.89848 n/a deg
node 14.51128 n/a deg
peri 308.01994 n/a deg
M 112.40269 n/a deg
tp 2455755.5157429
(2011-Jul-13.01574290)		 n/a JED
period 2065.7364388
5.66		 n/a
n/a		 d
yr
n 0.17427199 n/a deg/d
Q 3.6188969 n/a AU
   Orbit Determination Parameters
   # obs. used (total)      914  
   first obs. used      1978-??-??  
   last obs. used      2013-03-02  
   # oppositions      18  
   planetary ephem.      DE403  
   condition code      0  
   fit RMS      0.55  
   data source      MPC:mpn  
   producer      MPCLINUX  

Additional Information
 T_jup = 3.186 

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.2 mag n/a PDS3 (MPC 29077)  

7454 Kevinrighter           Discovered 1981 Mar. 2 by S. J. Bus at Siding Spring in the course of the U.K. Schmidt-Caltech Asteroid Survey.
Kevin Righter (b. 1965) is curator of Antarctic meteorites at NASA's Johnson Space Center. His research focuses on the chemical processes occurring during early planetary differentiation.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060809/MPCPages.arcLast Updated: 2007-08-08

Alternate Designations
 1981 EW20 = 1989 VU5 
[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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