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C/2015 V4 (PANSTARRS)
Classification: Halley-type Comet*          SPK-ID: 1003418
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

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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 2457465.5 (2016-Mar-18.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7056016783632861 2.1204e-05  
a 18.5450386637216 0.0014084 au
q 5.459628257287606 2.4349e-05 au
i 60.75130101588649 8.0838e-05 deg
node 179.8963264771008 0.00013526 deg
peri 306.9068226210166 0.0024277 deg
M 357.9884659164717 0.00035427 deg
tp 2457628.491492450165
(2016-Aug-27.99149245)
0.024775 TDB
period 29170.24263349159
79.86
3.323
0.009098
d
yr
n .0123413440375936 1.4059e-06 deg/d
Q 31.63044907015559 0.0024022 au
  Orbit Determination Parameters
   # obs. used (total)      79  
   data-arc span      509 days (1.39 yr)  
   first obs. used      2015-11-03  
   last obs. used      2017-03-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      3  
   norm. resid. RMS      .48722  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-May-06 22:17:48  

Additional Information
 Earth MOID = 4.73178 au 
 Jupiter MOID = 1.04358 au 
 T_jup = 1.588 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 9.5   0.5 13 from 39 observations, assumed slope, autocmod 2.6i
comet total magnitude slope K1 9.   n/a 13 autocmod 2.6i
comet nuclear magnitude M2 12.5   0.3 13 from 34 observations, autocmod 2.6i
comet nuclear magnitude slope K2 5.   n/a 13 autocmod 2.6i
comet nuclear phase coefficient PC 0.03   n/a 13 autocmod 2.6i

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2016.7   C/2015 V4       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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