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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 2456404.5 (2013-Apr-22.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9999827584468787 6.6419e-06  
a 252223.7983305578 97164 AU
q 4.348730017379355 4.4199e-06 AU
i 126.5413140145506 2.2384e-05 deg
node 173.1035350566137 1.4853e-05 deg
peri 163.6153292912961 0.0001623 deg
M 359.9999994785117 3.0134e-07 deg
tp 2456471.522336596643
(2013-Jun-28.02233660)
0.0011235 JED
period 46267658272.53831
126673944.62
2.6735e+10
7.32e+07
d
yr
n 7.780813065563646E-9 4.4961e-09 deg/d
Q 504443.2479310982 1.9433e+05 AU
  Orbit Determination Parameters
   # obs. used (total)      925  
   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      .62914  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-13 19:44:58  

Additional Information
 Earth MOID = 3.37114 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 43 2 parameter fit from 442 observations, autocmod 2.5c
comet total magnitude slope K1 9.   n/a 43 autocmod 2.5c
comet nuclear magnitude M2 11.9 mag 0.6 43 from 445 observations, autocmod 2.5c
comet nuclear magnitude slope K2 5.   n/a 43 autocmod 2.5c
comet nuclear phase coefficient PC 0.03   n/a 43 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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