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260P/McNaught
Classification: Jupiter-family Comet          SPK-ID: 1000584
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456904.5 (2014-Sep-04.0) TDB
Reference: JPL 91 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5941740417991925 5.7358e-08  
a 3.676514034429992 4.0443e-08 au
q 1.492024830861268 2.0482e-07 au
i 15.76554304387111 4.3458e-06 deg
node 351.8653969546087 1.4282e-05 deg
peri 15.59102536329714 3.0378e-05 deg
M 100.8757471382425 3.2662e-06 deg
tp 2456182.998841640896
(2012-Sep-12.49884164)
3.4664e-05 TDB
period 2574.85495154076
7.05
4.2486e-05
1.163e-07
d
yr
n .1398137008784051 2.307e-09 deg/d
Q 5.861003237998716 6.4473e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 2.085032283085584E-10 4.706E-11
A2 [EST] -1.595934908449729E-11 4.314E-13
A3 [EST] 9.971225402995277E-11 2.944E-11
  Orbit Determination Parameters
   # obs. used (total)      6580  
   data-arc span      5394 days (14.77 yr)  
   first obs. used      2005-05-20  
   last obs. used      2020-02-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43611  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Sep-24 20:19:46  

Additional Information
 Earth MOID = .495106 au 
 Jupiter MOID = .0237559 au 
 T_jup = 2.717 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 12.7   0.7 91 2 parameter fit from 2842 observations, autocmod 2.8
comet total magnitude slope K1 13.   n/a 91 autocmod 2.8
comet nuclear magnitude M2 15.4   0.7 91 from 3345 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a 91 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a 91 autocmod 2.8

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2012.7   260P/2012 K2       
 2005.6   260P/2005 K3       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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