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JPL Small-Body Database Browser
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C/2012 J1 (Catalina)
Classification: Hyperbolic Comet          SPK-ID: 1003188
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 2456247.5 (2012-Nov-16.0) TDB
Reference: JPL 79 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.001327577662216 2.4058e-06  
a -2379.303942059808 4.3108 au
q 3.158710765100877 1.499e-06 au
i 34.1860886355766 1.0341e-05 deg
node 235.217056979779 1.4694e-05 deg
peri 147.2727372361348 5.9024e-05 deg
M -.0001803296535382046 4.9168e-07 deg
tp 2456268.734300576684
(2012-Dec-07.23430058)
0.00025431 TDB
period n/a
n/a
n/a
n/a
d
yr
n 8.492375479332377E-6 2.3079e-08 deg/d
Q n/a n/a au
  Orbit Determination Parameters
   # obs. used (total)      4401  
   data-arc span      677 days (1.85 yr)  
   first obs. used      2012-05-13  
   last obs. used      2014-03-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   norm. resid. RMS      .3547  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Feb-28 08:14:51  

Additional Information
 Earth MOID = 2.21956 au 
 Jupiter MOID = 1.3824 au 
 T_jup = 1.824 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 5.5   0.8 79 from 964 observations, assumed slope, autocmod 2.6m
comet total magnitude slope K1 13.   n/a 79 autocmod 2.6m
comet nuclear magnitude M2 10.5   0.5 79 from 3254 observations, autocmod 2.6m
comet nuclear magnitude slope K2 5.   n/a 79 autocmod 2.6m
comet nuclear phase coefficient PC 0.03   n/a 79 autocmod 2.6m
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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