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

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2458816.5 (2019-Nov-29.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.001256801409711 7.6298e-06  
a -5106.116596755666 30.993 au
q 6.417374536951058 6.6253e-06 au
i 142.635327321043 1.8014e-05 deg
node 276.2322754786017 1.9869e-05 deg
peri 326.0540525674404 7.2838e-05 deg
M .0002119409792280517 1.9286e-06 deg
tp 2458738.040243848147
(2019-Sep-11.54024385)
0.00093629 TDB
period n/a
n/a
n/a
n/a
d
yr
n 2.701269920057561E-6 2.4594e-08 deg/d
Q n/a n/a au
  Orbit Determination Parameters
   # obs. used (total)      873  
   data-arc span      1483 days (4.06 yr)  
   first obs. used      2017-08-18  
   last obs. used      2021-09-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .47062  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Sep-20 00:12:43  

Additional Information
 Earth MOID = 5.4643 au 
 Jupiter MOID = 1.63393 au 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 6.2   0.9 28 from 837 observations, assumed slope, autocmod 2.9e
comet total magnitude slope K1 8.   n/a 28 autocmod 2.9e

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2020-May-18 02:01 < 00:01 Jupiter 1.65893611571909 1.65891663163979 1.65895559983865 28.1164344945175 28.0982690779561 2458987.584070764 0.576547134507452 1056.54778549717 182.729373199153 -23.5415197334483 511204.512434372 T 28 CATAB v2.0g-lin.ifort 2021-Sep-20 00:12:45 2021-Sep-20 00:12
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]
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