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C/2017 X1 (PANSTARRS)
Classification: Jupiter-family Comet          SPK-ID: 1003550
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458161.5 (2018-Feb-12.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .8511131255205623 1.6293e-05  
a 31.31669493776297 0.0034957 au
q 4.662644828309558 1.0993e-05 au
i 31.31100084646509 3.0884e-05 deg
node 251.1267903829819 0.00012969 deg
peri 283.1062436141878 0.00029505 deg
M 359.3113644198033 0.00012446 deg
tp 2458283.947315072065
(2018-Jun-14.44731507)
0.0022678 TDB
period 64012.13456520809
175.26
10.718
0.02934
d
yr
n .00562393368765533 9.4165e-07 deg/d
Q 57.97074504721638 0.0064709 au
  Orbit Determination Parameters
   # obs. used (total)      98  
   data-arc span      893 days (2.44 yr)  
   first obs. used      2017-02-12  
   last obs. used      2019-07-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      3  
   norm. resid. RMS      .31855  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:33:38  

Additional Information
 Earth MOID = 3.83473 au 
 Jupiter MOID = 1.16315 au 
 T_jup = 2.367 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 7.2   0.6 11 from 66 observations, assumed slope, autocmod 2.9c
comet total magnitude slope K1 14.   n/a 11 autocmod 2.9c
comet nuclear magnitude M2 13.1   0.1 11 from 21 observations, autocmod 2.9c
comet nuclear magnitude slope K2 5.   n/a 11 autocmod 2.9c
comet nuclear phase coefficient PC 0.03   n/a 11 autocmod 2.9c

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2018.5   C/2017 X1       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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