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C/2017 U7 (PANSTARRS)
Classification: Hyperbolic Comet          SPK-ID: 1003571
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458663.5 (2019-Jun-29.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.000682548676019 1.0509e-05  
a -9401.984983513512 144.74 au
q 6.417312402446845 1.0594e-05 au
i 142.6353795793326 2.2672e-05 deg
node 276.2322001204917 2.9489e-05 deg
peri 326.0239150992427 0.00012975 deg
M -8.020489275952144E-5 1.8518e-06 deg
tp 2458737.686711159648
(2019-Sep-11.18671116)
0.0015971 TDB
period n/a
n/a
n/a
n/a
d
yr
n 1.081122097284006E-6 2.4965e-08 deg/d
Q n/a n/a au
  Orbit Determination Parameters
   # obs. used (total)      644  
   data-arc span      1072 days (2.93 yr)  
   first obs. used      2017-08-18  
   last obs. used      2020-07-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   norm. resid. RMS      .40693  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-06 07:15:10  

Additional Information
 Earth MOID = 5.46552 au 
 Jupiter MOID = 1.63428 au 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 8.7736   .94769 11 autocmod 2.8
comet total magnitude M1 6.3   0.9 15 from 620 observations, assumed slope, autocmod 2.8
comet total magnitude slope K1 8.   n/a 15 autocmod 2.8

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]
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