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

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1437822350283139 5.7068e-08  
a 3.165531015884033 3.6799e-08 AU
q 2.710383891368778 1.8538e-07 AU
i .8989778818883933 6.7801e-06 deg
node 14.06483136027203 0.00037518 deg
peri 308.3535050782801 0.00037599 deg
M 182.1693275157655 2.4064e-05 deg
tp 2457816.684243303569
(2017-Mar-04.18424330)
0.00014004 JED
period 2057.161019968123
5.63
3.5871e-05
9.821e-08
d
yr
n .1749984549121869 3.0515e-09 deg/d
Q 3.620678140399288 4.209e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      983  
   data-arc span      12899 days (35.32 yr)  
   first obs. used      1978-11-30  
   last obs. used      2014-03-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56276  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 13:52:36  

Additional Information
 Earth MOID = 1.69694 AU 
 T_jup = 3.187 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.4 mag n/a MPO256919  

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

[ show close-approach data ]
Alternate Designations
 1981 EW20 = 1989 VU5 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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