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JPL Small-Body Database Browser
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C/1979 Y1 (Bradfield)
Classification: Comet          SPK-ID: 1000540
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2444263.5 (1980-Jan-25.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9879521840347483 9.8692e-05  
a 45.25922633504624 0.37324 au
q .5452748296143116 3.0079e-05 au
i 148.6024233616918 0.00030014 deg
node 103.2161588590852 0.00092632 deg
peri 257.6049367562282 0.0054013 deg
M .1113282348553456 0.0013848 deg
tp 2444229.107643168589
(1979-Dec-21.60764317)
0.0023601 TDB
period 111213.9115058776
304.49
1375.7
3.766
d
yr
n .00323700511137021 4.0042e-05 deg/d
Q 89.97317784047817 0.74199 au
  Orbit Determination Parameters
   # obs. used (total)      112  
   data-arc span      75 days  
   first obs. used      1979-12-26  
   last obs. used      1980-03-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      6  
   norm. resid. RMS      1.1296  
   source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-13 19:42:23  

Additional Information
 Earth MOID = .0672166 au 
 T_jup = -0.664 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 8.4   1. 8 2 parameter fit from 13 observations, autocmod 2.5c
comet total magnitude slope K1 14.   n/a 8 autocmod 2.5c

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1980.0   C/1979 Y1       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]
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