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4966 Edolsen (1981 EO34)
Classification: Main-belt Asteroid          SPK-ID: 2004966
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2117190671132644 7.1632e-08  
a 2.632793959964697 1.6658e-08 au
q 2.075381278859534 1.8364e-07 au
i 9.946367542306804 6.501e-06 deg
node 175.9393317944388 2.7131e-05 deg
peri 183.749656838383 2.9523e-05 deg
M 224.7743615093796 1.5963e-05 deg
tp 2457986.611545280451
(2017-Aug-21.11154528)
7.285e-05 JED
period 1560.356147370663
4.27
1.4809e-05
4.054e-08
d
yr
n .2307165582720532 2.1896e-09 deg/d
Q 3.190206641069861 2.0185e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1146  
   data-arc span      12542 days (34.34 yr)  
   first obs. used      1981-02-09  
   last obs. used      2015-06-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55867  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 11:50:10  

Additional Information
 Earth MOID = 1.07013 au 
 Jupiter MOID = 2.25538 au 
 T_jup = 3.346 
[ 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 13.6 mag n/a MPO279566  
diameter diameter 9.66 km 0.8 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2
geometric albedo albedo 0.0687   0.013 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2

4966 Edolsen           Discovered 1981 Mar. 2 by S. J. Bus at Siding Spring in the course of the U.K. Schmidt-Caltech Asteroid Survey.
Edward Olsen (b. 1927) is a long-time curator of the meteorite collection at the Field Museum of Natural History in Chicago. His studies of stony-iron meteorites and phosphate minerals have focused on unraveling the processes that led to core formation in minor planets.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20001013/MPCPages.arcLast Updated: 2013-03-29

[ show close-approach data ]
Alternate Designations
 1981 EO34 = 1987 SO1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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