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C/2012 C1 (McNaught)
Classification: Comet          SPK-ID: 1003171
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.


Orbital Elements at Epoch 2456236.5 (2012-Nov-05.0) TDB
Reference: JPL 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9962058321457286 1.2763e-05  
a 1275.108361196977 4.2918 au
q 4.837975154766315 9.9081e-06 au
i 96.2777092518686 2.18e-05 deg
node 300.6399259612749 4.5038e-05 deg
peri 279.8891505012245 0.00019349 deg
M 359.9980188777886 9.999e-06 deg
tp 2456328.022491328693
(2013-Feb-04.52249133)
0.001654 TDB
period 16631026.94425794
45533.27
83965
229.9
d
yr
n 2.164628806186225E-5 1.0929e-07 deg/d
Q 2545.378747239188 8.5673 au
  Orbit Determination Parameters
   # obs. used (total)      219  
   data-arc span      903 days (2.47 yr)  
   first obs. used      2012-02-05  
   last obs. used      2014-07-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .44869  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:32:00  

Additional Information
 Earth MOID = 4.55739 au 
 Jupiter MOID = 2.24094 au 
 T_jup = -0.294 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 6.7   0.5 46 from 93 observations, assumed slope, autocmod 2.9c
comet total magnitude slope K1 11.25   n/a 46 autocmod 2.9c
comet nuclear magnitude M2 11.2   0.6 46 from 108 observations, autocmod 2.9c
comet nuclear magnitude slope K2 5.   n/a 46 autocmod 2.9c
comet nuclear phase coefficient PC 0.03   n/a 46 autocmod 2.9c

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2013.1   C/2012 C1       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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