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4262 DeVorkin (1989 CO)
Classification: Main-belt Asteroid          SPK-ID: 2004262
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2204458831617418 6.3624e-08  
a 2.300872687262955 1.311e-08 AU
q 1.793654775676543 1.5106e-07 AU
i 7.327890471867962 6.5904e-06 deg
node 129.2539572695249 4.9686e-05 deg
peri 184.1423746883375 5.1951e-05 deg
M 277.5847576953315 1.6908e-05 deg
tp 2457092.338341846038
(2015-Mar-10.83834185)
6.0696e-05 JED
period 1274.786072656153
3.49
1.0895e-05
2.983e-08
d
yr
n .2824003240401752 2.4136e-09 deg/d
Q 2.808090598849368 1.6e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1085  
   data-arc span      30211 days (82.71 yr)  
   first obs. used      1931-10-10  
   last obs. used      2014-06-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50736  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:08:45  

Additional Information
 Earth MOID = .7787 AU 
 T_jup = 3.548 
[ 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 12.7 mag n/a MPO263385  

4262 DeVorkin           Discovered 1989 Feb. 5 by M. Arai and H. Mori at Yorii.
David H. DeVorkin (b. 1944), Chair of the Historical Astronomy Division of the American Astronomical Society (1997-1999), wrote the definitive biography of astronomer Henry Norris Russell. DeVorkin has been the Curator at the Smithsonian National Air and Space Museum since 1981.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20120406/MPCPages.arcLast Updated: 2012-04-09

[ show close-approach data ]
Alternate Designations
 1989 CO = 1931 TH3 = 1955 KA = 1955 MD = 1976 NF 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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