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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2102981083049542 7.1387e-08  
a 2.635756869358679 1.7188e-08 AU
q 2.08146218578076 1.8292e-07 AU
i 9.934499078068981 6.538e-06 deg
node 175.950340925937 2.8435e-05 deg
peri 183.7016107055852 3.0871e-05 deg
M 132.6330436402806 1.5554e-05 deg
tp 2456424.654890892900
(2013-May-12.15489089)
6.4506e-05 JED
period 1562.990892682779
4.28
1.5289e-05
4.186e-08
d
yr
n .2303276376627389 2.253e-09 deg/d
Q 3.190051552936597 2.0803e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1092  
   data-arc span      12434 days (34.04 yr)  
   first obs. used      1981-02-09  
   last obs. used      2015-02-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56019  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 13:56:20  

Additional Information
 Earth MOID = 1.07825 AU 
 T_jup = 3.345 
[ 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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