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C/2019 L2 (NEOWISE)
Classification: Halley-type Comet*          SPK-ID: 1003630
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458655.5 (2019-Jun-21.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9367514145823834 0.0027429  
a 25.63744491913123 1.1402 au
q 1.621532124857112 0.0017995 au
i 152.1873028226871 0.0055174 deg
node 12.53386626090697 0.008468 deg
peri 18.81569090590202 0.14753 deg
M .6067943449730322 0.042159 deg
tp 2458575.581088287643
(2019-Apr-02.08108829)
0.22129 TDB
period 47414.43036639898
129.81
3163.1
8.66
d
yr
n .007592625224389912 0.00050652 deg/d
Q 49.65335771340536 2.2083 au
  Orbit Determination Parameters
   # obs. used (total)      117  
   data-arc span      19 days  
   first obs. used      2019-06-11  
   last obs. used      2019-06-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .67037  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:33:56  

Additional Information
 Earth MOID = .636695 au 
 Jupiter MOID = 1.69954 au 
 T_jup = -1.171 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 10.4   0.7 5 2 parameter fit from 95 observations, autocmod 2.9c
comet total magnitude slope K1 27.75   n/a 5 autocmod 2.9c

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2019.2   C/2019 L2       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]
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