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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 ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1376018434242788 3.6358e-08  
a 2.367015007073918 7.4302e-09 au
q 2.041309378687615 8.407e-08 au
i 5.848527705125574 3.953e-06 deg
node 203.8096202588496 2.8729e-05 deg
peri 158.2492986317098 3.1071e-05 deg
M 147.052397971422 1.1506e-05 deg
tp 2458657.162657687089
(2019-Jun-22.66265769)
4.2173e-05 TDB
period 1330.147933192228
3.64
6.2632e-06
1.715e-08
d
yr
n .2706465882603256 1.2744e-09 deg/d
Q 2.692720635460222 8.4527e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1871  
   data-arc span      24662 days (67.52 yr)  
   first obs. used      1953-09-06  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50527  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 17:48:46  

Additional Information
 Earth MOID = 1.03867 au 
 Jupiter MOID = 2.77378 au 
 T_jup = 3.527 
[ 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 14.64   n/a E2021B10  

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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