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C/2002 K4 (NEAT)
Classification: Halley-type Comet*          SPK-ID: 1000395
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2452467.5 (2002-Jul-12.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .8422824102859102 5.0832e-05  
a 17.52827532150834 0.0057588 au
q 2.764517335553257 1.7464e-05 au
i 94.0627690063037 0.00047293 deg
node 308.0990069766754 0.00026897 deg
peri 24.43175554385731 0.000643 deg
M 359.9869206785307 3.306e-05 deg
tp 2452468.473845181117
(2002-Jul-12.97384518)
0.0022841 TDB
period 26804.46887281993
73.39
13.21
0.03617
d
yr
n .01343059628258647 6.6188e-06 deg/d
Q 32.29203330746341 0.010609 au
  Orbit Determination Parameters
   # obs. used (total)      243  
   data-arc span      128 days  
   first obs. used      2002-05-27  
   last obs. used      2002-10-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      4  
   norm. resid. RMS      .80356  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:30:17  

Additional Information
 Earth MOID = 1.81323 au 
 Jupiter MOID = 2.17562 au 
 T_jup = 0.157 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 11.4   0.6 22 from 161 observations, assumed slope, autocmod 2.9c
comet total magnitude slope K1 10.   n/a 22 autocmod 2.9c
comet nuclear magnitude M2 14.3   0.7 22 from 11 observations, autocmod 2.9c
comet nuclear magnitude slope K2 5.   n/a 22 autocmod 2.9c
comet nuclear phase coefficient PC 0.03   n/a 22 autocmod 2.9c

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2002.5   C/2002 K4       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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