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

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2198100668698538 1.2097e-08  
a 2.301463172279429 7.2369e-09 au
q 1.795578398482182 2.7027e-08 au
i 7.326445191371884 6.5533e-07 deg
node 129.1947995540879 3.7706e-06 deg
peri 184.1408162857183 5.1942e-06 deg
M 235.1297054840849 4.629e-06 deg
tp 2459642.844983850842
(2022-Mar-04.34498385)
1.7789e-05 TDB
period 1275.276836685982
3.49
6.0151e-06
1.647e-08
d
yr
n .2822916480907153 1.3315e-09 deg/d
Q 2.807347946076677 8.8276e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2616  
   data-arc span      32673 days (89.45 yr)  
   first obs. used      1931-10-10  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45097  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:30:35  

Additional Information
 Earth MOID = .779607 au 
 Jupiter MOID = 2.48136 au 
 T_jup = 3.548 
[ 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 12.88   n/a MPCxxxxx  
diameter diameter 6.388 km 0.139 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.1619 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
[Noschese, A.; Vecchione, A. (2019) Minor Planet Bull. 46, 25.]
geometric albedo albedo 0.360   0.075 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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

Alternate Designations
 1989 CO = 1931 TH3 = 1955 KA = 1955 MD = 1976 NF 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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