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C/2019 K4 (Ye)
Classification: Comet          SPK-ID: 1003627
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458720.5 (2019-Aug-25.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9990612977850601 1.5928e-05  
a 2406.95868572785 40.853 au
q 2.259417449561461 9.955e-06 au
i 105.3052736960367 0.00016575 deg
node 180.1651287668925 1.2005e-05 deg
peri 139.7721542778129 0.00057453 deg
M .000580751005507727 1.4797e-05 deg
tp 2458650.919290901488
(2019-Jun-16.41929090)
0.0014346 TDB
period 43132177.19453615
118089.47
1.0981e+06
3006
d
yr
n 8.346437008647078E-6 2.1249e-07 deg/d
Q 4811.657954006139 81.668 au
  Orbit Determination Parameters
   # obs. used (total)      609  
   data-arc span      222 days  
   first obs. used      2019-04-24  
   last obs. used      2019-12-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .56292  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-02 23:42:41  

Additional Information
 Earth MOID = 1.42136 au 
 Jupiter MOID = 2.26014 au 
 T_jup = -0.490 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 2.537158954320191E-10 1.532973896189287E-10 2.175503142456391E-8 -4.867979581189645E-11 8.625254943630194E-9 2.518404353191165E-9
q 1.532973896189287E-10 9.910168486478244E-11 1.416137759398954E-8 -2.4000446782973E-11 5.672599046133702E-9 1.588695259940565E-9
tp 2.175503142456391E-8 1.416137759398954E-8 2.058109527706784E-6 -3.146803869810636E-9 8.233765735662088E-7 2.248434432656532E-7
node -4.867979581189645E-11 -2.4000446782973E-11 -3.146803869810636E-9 1.441312885322979E-10 -1.176765930969338E-9 -6.361366017052845E-10
peri 8.625254943630194E-9 5.672599046133702E-9 8.233765735662088E-7 -1.176765930969338E-9 3.300809554502631E-7 8.977253281812525E-8
i 2.518404353191165E-9 1.588695259940565E-9 2.248434432656532E-7 -6.361366017052845E-10 8.977253281812525E-8 2.747343621531816E-8

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 12.9   0.6 12 2 parameter fit from 478 observations, autocmod 2.9c
comet total magnitude slope K1 8.25   n/a 12 autocmod 2.9c
comet nuclear magnitude M2 14.6   0.4 12 from 95 observations, autocmod 2.9c
comet nuclear magnitude slope K2 5.   n/a 12 autocmod 2.9c
comet nuclear phase coefficient PC 0.03   n/a 12 autocmod 2.9c

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2019.5   C/2019 K4       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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