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30928 Jefferson (1993 TJ32)
Classification: Main-belt Asteroid          SPK-ID: 2030928
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1620479440494697 5.3271e-08  
a 2.652704099440179 2.0191e-08 au
q 2.222838853954298 1.4072e-07 au
i 16.27523713857929 6.9147e-06 deg
node 32.61120176285957 2.1933e-05 deg
peri 69.77945881353199 3.3328e-05 deg
M 40.73817698214663 2.2584e-05 deg
tp 2457421.920859038955
(2016-Feb-03.42085904)
9.8742e-05 JED
period 1578.089534397926
4.32
1.8018e-05
4.933e-08
d
yr
n .2281239385681291 2.6046e-09 deg/d
Q 3.08256934492606 2.3463e-08 au
  Orbit Determination Parameters
   # obs. used (total)      823  
   data-arc span      23838 days (65.26 yr)  
   first obs. used      1950-12-09  
   last obs. used      2016-03-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .47716  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Mar-24 17:05:20  

Additional Information
 Earth MOID = 1.29387 au 
 Jupiter MOID = 2.29547 au 
 T_jup = 3.314 
[ 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 MPO233692  
rotation period rot_per 5.8413 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2016) Astron. J. 150, A75.]

30928 Jefferson           Discovered 1993 Oct. 9 by E. W. Elst at the European Southern Observatory.
Thomas Jefferson (1743-1826), the third president of the United States (1801-1809), will be always remembered as the principal author of the 1776 Declaration of Independence. A man of the Enlightenment and of great intellectual power, he is also honored for the Virginian Statute for Religious Freedom (1779).
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20090409/MPCPages.arcLast Updated: 2009-04-10

[ show close-approach data ]
Alternate Designations
 1993 TJ32 = 1993 TO48 = 1999 CN123 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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