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P/2017 G2 (PANSTARRS)
Classification: Halley-type Comet*          SPK-ID: 1003514
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2457889.5 (2017-May-16.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6503128077762187 6.0253e-05  
a 8.139426123084364 0.0014842 au
q 2.846253067294269 3.1083e-05 au
i 47.90624455054665 0.00021693 deg
node 79.81962713412648 0.0010016 deg
peri 105.9391345729134 0.0027631 deg
M 358.7727768109006 0.00026265 deg
tp 2457918.414131880449
(2017-Jun-13.91413188)
0.0091893 TDB
period 8481.821048867472
23.22
2.3199
0.006352
d
yr
n .0424437155565866 1.1609e-05 deg/d
Q 13.43259917887446 0.0024493 au
  Orbit Determination Parameters
   # obs. used (total)      165  
   data-arc span      130 days  
   first obs. used      2017-03-18  
   last obs. used      2017-07-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      5  
   norm. resid. RMS      .42631  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 11:21:02  

Additional Information
 Earth MOID = 2.19408 au 
 Jupiter MOID = .445571 au 
 T_jup = 1.913 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 12.9   0.6 8 from 144 observations, assumed slope, autocmod 2.8
comet total magnitude slope K1 10.   n/a 8 autocmod 2.8
comet nuclear magnitude M2 15.4   0.3 8 from 4 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a 8 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a 8 autocmod 2.8

[ 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
1995-Aug-22 14:10 7_05:15 Jupiter 1.40333761030296 1.37482235845312 1.43186552248148 13.2593612007289 13.2137619605731 2449952.090105950 10395.028443322 1437765.47789094 13081.7629462669 7.88064582409779 2801.88338432204 T 8 CATAB v2.0f-lin.ifort 2020-Aug-24 11:21:04 2020-Aug-24 11:21
2061-Jan-20 08:26 3_22:41 Jupiter 1.80059945809588 1.72439243564382 1.8770824451476 11.0916135059087 11.0491206600407 2473844.851655981 5680.80834614908 3966611.05463757 12603.8115175796 15.9994169962091 7273.63902993482 T 8 CATAB v2.0f-lin.ifort 2020-Aug-24 11:21:04 2020-Aug-24 11:21
2084-Aug-29 05:08 3_10:22 Jupiter 1.10098768013279 1.05336809294038 1.14890517288011 12.0647061858517 12.0007698070398 2482466.713938310 4942.36677810971 2548364.90150566 11790.3599280497 20.5648298710845 5673.29374719445 T 8 CATAB v2.0f-lin.ifort 2020-Aug-24 11:21:04 2020-Aug-24 11:21

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2017.4   P/2017 G2       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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