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C/2012 S4 (PANSTARRS)
Classification: Comet          SPK-ID: 1003206
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456396.5 (2013-Apr-14.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9999727135456135 6.1889e-06  
a 159373.2890550965 36148 AU
q 4.348731982235326 4.2463e-06 AU
i 126.5412238622025 2.0877e-05 deg
node 173.103593301114 1.4195e-05 deg
peri 163.6148029058907 0.00015593 deg
M 359.9999988378793 3.9538e-07 deg
tp 2456471.518862505007
(2013-Jun-28.01886250)
0.0010776 JED
period 23239229777.70442
63625543.54
7.9064e+09
2.165e+07
d
yr
n 1.549104696857819E-8 5.2703e-09 deg/d
Q 318742.2293782107 72294 AU
  Orbit Determination Parameters
   # obs. used (total)      917  
   data-arc span      460 days (1.26 yr)  
   first obs. used      2012-09-28  
   last obs. used      2014-01-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   fit RMS      .65429  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 13:33:36  

Additional Information
 Earth MOID = 3.36876 AU 
 T_jup = -1.540 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 9.2 mag 0.7 40 2 parameter fit from 442 observations, autocmod 2.5c
comet total magnitude slope K1 9.   n/a 40 autocmod 2.5c
comet nuclear magnitude M2 11.9 mag 0.6 40 from 437 observations, autocmod 2.5c
comet nuclear magnitude slope K2 5.   n/a 40 autocmod 2.5c
comet nuclear phase coefficient PC 0.03   n/a 40 autocmod 2.5c

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2013.5   C/2012 S4       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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