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JPL Small-Body Database Browser
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5664 Eugster (1981 EX43)
Classification: Main-belt Asteroid          SPK-ID: 2005664
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1372637138575822 3.7573e-08  
a 2.366553337047459 7.7111e-09 au
q 2.04171143696227 8.7238e-08 au
i 5.848863427549651 4.3407e-06 deg
node 203.8237008476231 3.0759e-05 deg
peri 158.1818725097916 3.3408e-05 deg
M 344.7280451329235 1.2183e-05 deg
tp 2458656.911156512868
(2019-Jun-22.41115651)
4.5012e-05 TDB
period 1329.758797834897
3.64
6.4993e-06
1.779e-08
d
yr
n .2707257892078993 1.3232e-09 deg/d
Q 2.691395237132648 8.7696e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1587  
   data-arc span      24189 days (66.23 yr)  
   first obs. used      1953-09-06  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53545  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 21:21:18  

Additional Information
 Earth MOID = 1.03979 au 
 Jupiter MOID = 2.77055 au 
 T_jup = 3.528 
[ 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 14.7   n/a MPO358685  

5664 Eugster           Discovered 1981 Mar. 6 by S. J. Bus at Siding Spring in the course of the U.K. Schmidt-Caltech Asteroid Survey.
Otto Eugster (b. 1938), professor at the University of Bern, investigates the chronologies and exposure histories of meteorites in space based on cosmic-ray effects. His work on the cosmic-ray exposure of lunar regolith has been fundamental to understanding the complex history of lunar materials.
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
 1981 EX43 = 1988 CL5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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