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5997 Dirac (1983 TH)
Classification: Main-belt Asteroid          SPK-ID: 2005997
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1733743182861376 4.0763e-08  
a 2.209564198604085 6.8096e-09 au
q 1.826482511961645 9.226e-08 au
i 7.549979303289087 4.1015e-06 deg
node 48.22899294050745 2.7093e-05 deg
peri 330.4173010754105 2.893e-05 deg
M 51.2698093497268 9.1774e-06 deg
tp 2458829.648984193404
(2019-Dec-12.14898419)
3.0616e-05 TDB
period 1199.660511136702
3.28
5.5458e-06
1.518e-08
d
yr
n .300084896233596 1.3872e-09 deg/d
Q 2.592645885246524 7.9902e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2100  
   data-arc span      23964 days (65.61 yr)  
   first obs. used      1955-03-22  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45819  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:39:12  

Additional Information
 Earth MOID = .833667 au 
 Jupiter MOID = 2.86841 au 
 T_jup = 3.627 
[ 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 13.9   n/a MPO448973  

5997 Dirac           Discovered 1983 Oct. 1 by A. Mrkos at Klet.
Paul Adrien Maurice Dirac (1902-1984), English theoretical physicist and Nobel laureate, is known for his work in quantum mechanics, for his theory of the spinning electron and his prediction of the existence of the positron. The name was suggested by M. Tichy and Z. Moravec.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000726/MPCPages.arcLast Updated: 2013-03-29

Alternate Designations
 1983 TH = 1992 KX = 1993 UE3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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