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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1374845540852261 3.654e-08  
a 2.367079630974282 7.612e-09 au
q 2.041642743425561 8.4511e-08 au
i 5.84823625250988 4.1203e-06 deg
node 203.8184379590001 2.9628e-05 deg
peri 158.2296578493969 3.2334e-05 deg
M 92.94861336857218 1.2107e-05 deg
tp 2458657.054252184092
(2019-Jun-22.55425218)
4.4663e-05 TDB
period 1330.202406822912
3.64
6.4165e-06
1.757e-08
d
yr
n .2706355049077326 1.3055e-09 deg/d
Q 2.692516518523002 8.6585e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1730  
   data-arc span      24252 days (66.40 yr)  
   first obs. used      1953-09-06  
   last obs. used      2020-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50999  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:43:23  

Additional Information
 Earth MOID = 1.0406 au 
 Jupiter MOID = 2.77309 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 14.6   n/a MPO502208  

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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