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JPL Small-Body Database Browser
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P/2018 L4 (PANSTARRS)
Classification: Jupiter-family Comet          SPK-ID: 1003576
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458298.5 (2018-Jun-29.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6603284205071381 2.1005e-05  
a 4.934864631330902 0.0003315 au
q 1.676233263907627 9.2354e-06 au
i 26.62545434158135 0.00028527 deg
node 145.1930581404011 0.00033481 deg
peri 140.4325338387724 0.00071042 deg
M 357.0471947485633 0.00023204 deg
tp 2458331.343058711271
(2018-Jul-31.84305871)
0.0010323 TDB
period 4004.158801297422
10.96
0.40347
0.001105
d
yr
n .0899065241576716 9.0593e-06 deg/d
Q 8.193495998754178 0.0005504 au
  Orbit Determination Parameters
   # obs. used (total)      129  
   data-arc span      149 days  
   first obs. used      2018-05-19  
   last obs. used      2018-10-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      4  
   norm. resid. RMS      .56718  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-15 08:30:35  

Additional Information
 Earth MOID = .726499 au 
 Jupiter MOID = .0506571 au 
 T_jup = 2.362 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 15.0   0.5 5 2 parameter fit from 91 observations, autocmod 2.6q
comet total magnitude slope K1 21.   n/a 5 autocmod 2.6q
comet nuclear magnitude M2 20.0   0.4 5 from 14 observations, autocmod 2.6q
comet nuclear magnitude slope K2 5.   n/a 5 autocmod 2.6q
comet nuclear phase coefficient PC 0.03   n/a 5 autocmod 2.6q

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2018.6   P/2018 L4       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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