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C/2016 B1 (NEOWISE)
Classification: Comet          SPK-ID: 1003438
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457840.5 (2017-Mar-28.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9923947698438305 7.7553e-06  
a 421.5781495258298 0.43023 au
q 3.206198855955992 2.6623e-06 au
i 50.47615946870098 2.3984e-05 deg
node 231.9541689730266 2.7514e-05 deg
peri 8.559465187578116 0.00012379 deg
M .01289887887683717 1.9744e-05 deg
tp 2457727.216924626365
(2016-Dec-04.71692463)
0.00074508 TDB
period 3161662.92620529
8656.16
4839.8
13.25
d
yr
n .0001138641304916338 1.743e-07 deg/d
Q 839.9501001957035 0.85719 au
  Orbit Determination Parameters
   # obs. used (total)      522  
   data-arc span      638 days (1.75 yr)  
   first obs. used      2016-01-17  
   last obs. used      2017-10-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .62148  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:33:22  

Additional Information
 Earth MOID = 2.20097 au 
 Jupiter MOID = 2.17476 au 
 T_jup = 1.423 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 6.014487864483795E-11 1.972785681252957E-11 -1.276930729011066E-10 -1.322335699483116E-11 -3.550922889665478E-11 1.160957901706023E-10
q 1.972785681252957E-11 7.087637877734959E-12 -1.835163848130732E-10 -5.375948355206259E-12 -2.85248292734329E-11 4.007071719971355E-11
tp -1.276930729011066E-10 -1.835163848130732E-10 5.551495870158557E-7 3.659234261871739E-9 9.075061743380607E-8 -4.73577121435998E-9
node -1.322335699483116E-11 -5.375948355206259E-12 3.659234261871739E-9 7.57014132287684E-10 1.364632189604205E-10 2.158408856970595E-10
peri -3.550922889665478E-11 -2.85248292734329E-11 9.075061743380607E-8 1.364632189604205E-10 1.532466183753485E-8 -9.643653385318973E-10
i 1.160957901706023E-10 4.007071719971355E-11 -4.73577121435998E-9 2.158408856970595E-10 -9.643653385318973E-10 5.752406090523315E-10

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 10.5   0.9 22 2 parameter fit from 98 observations, autocmod 2.9c
comet total magnitude slope K1 8.5   n/a 22 autocmod 2.9c
comet nuclear magnitude M2 13.0   0.7 22 from 345 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 
 2016.9   C/2016 B1       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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