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C/2017 C1 (NEOWISE)
Classification: Halley-type Comet*          SPK-ID: 1003498
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457818.5 (2017-Mar-06.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9278155235730685 7.7732e-05  
a 20.80440293920799 0.022794 au
q 1.501754933541643 2.8465e-05 au
i 65.75224118294994 0.0010463 deg
node 357.4571908365644 0.00064023 deg
peri 110.2043155925726 0.0020729 deg
M .4783381737884179 0.00081659 deg
tp 2457772.446371627595
(2017-Jan-18.94637163)
0.0030053 TDB
period 34660.21974110576
94.89
56.962
0.156
d
yr
n .01038654696043525 1.707e-05 deg/d
Q 40.10705094487433 0.043942 au
  Orbit Determination Parameters
   # obs. used (total)      60  
   data-arc span      102 days  
   first obs. used      2017-02-06  
   last obs. used      2017-05-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      5  
   norm. resid. RMS      .55213  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:33:29  

Additional Information
 Earth MOID = .913583 au 
 Jupiter MOID = .334894 au 
 T_jup = 0.863 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 18.1   0.7 7 2 parameter fit from 43 observations, autocmod 2.9c
comet total magnitude slope K1 8.5   n/a 7 autocmod 2.9c

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2017.0   C/2017 C1       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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