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C/2012 X1 (LINEAR)
Classification: Comet          SPK-ID: 1003224
[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456644.5 (2013-Dec-18.0) TDB
Reference: JPL 65 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9895711858626149 3.1132e-06  
a 153.316517184367 0.045884 au
q 1.598909461906966 1.3481e-06 au
i 44.36731679876682 1.3273e-05 deg
node 113.1464195840937 1.6481e-05 deg
peri 132.1137001863842 8.0334e-05 deg
M 359.9659241781679 1.5367e-05 deg
tp 2456710.133517871476
(2014-Feb-21.63351787)		 0.00014346 TDB
period 693396.8181358965
1898.42		 311.27
0.8522		 d
yr
n .0005191832304160427 2.3307e-07 deg/d
Q 305.0341249068271 0.091289 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 3.613200618431053E-8 7.038E-10
A2 [EST] 2.190183669197523E-9 8.502E-10
A3 [EST] 5.328130630523456E-9 1.629E-10
DT [EST] 25.92027812999656 2.307
   Orbit Determination Parameters
   # obs. used (total)      2560  
   data-arc span      1038 days (2.84 yr)  
   first obs. used      2012-12-08  
   last obs. used      2015-10-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   norm. resid. RMS      .45893  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Jan-31 15:04:22  

Additional Information
 Earth MOID = .751502 au 
 Jupiter MOID = 1.06571 au 
 T_jup = 1.152 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 5.7   01. 65 2 parameter fit from 365 observations, autocmod 2.6k
comet total magnitude slope K1 14.   n/a 65 autocmod 2.6k
comet nuclear magnitude M2 10.8   0.9 65 from 1961 observations, autocmod 2.6k
comet nuclear magnitude slope K2 5.   n/a 65 autocmod 2.6k
comet nuclear phase coefficient PC 0.03   n/a 65 autocmod 2.6k

Alternate Designations
 Perihelion 
Year (est.)		  New-Style 
Desig		 Roman
 Numeral 		 Year/
 Letter 
 2014.1   C/2012 X1       
[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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