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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 2458720.5 (2019-Aug-25.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.000785766769753 9.0204e-06  
a -8166.90238899143 93.744 au
q 6.417280509086345 8.3833e-06 au
i 142.6353401712658 2.0803e-05 deg
node 276.2322517706704 2.5012e-05 deg
peri 326.0323307352453 9.7982e-05 deg
M -2.308026063115178E-5 3.9746e-07 deg
tp 2458737.783141365223
(2019-Sep-11.28314137)
0.0012206 TDB
period n/a
n/a
n/a
n/a
d
yr
n 1.335420462254258E-6 2.2993e-08 deg/d
Q n/a n/a au
  Orbit Determination Parameters
   # obs. used (total)      746  
   data-arc span      1339 days (3.67 yr)  
   first obs. used      2017-08-18  
   last obs. used      2021-04-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .41244  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-02 23:42:38  

Additional Information
 Earth MOID = 5.46577 au 
 Jupiter MOID = 1.63416 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 6.2   0.9 22 from 718 observations, assumed slope, autocmod 2.9c
comet total magnitude slope K1 8.   n/a 22 autocmod 2.9c

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