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JPL Small-Body Database Browser
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C/2011 L1 (McNaught)
Classification: Halley-type Comet*          SPK-ID: 1003130
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2455734.5 (2011-Jun-22.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7967849127030844 7.694e-05  
a 11.03446679530371 0.0041586 au
q 2.242370133082561 5.9565e-05 au
i 65.51249513854592 0.0012681 deg
node 252.3638830951731 0.00022785 deg
peri 294.4704217968163 0.0023528 deg
M 4.993283326051963 0.0029209 deg
tp 2455548.801171672450
(2010-Dec-18.30117167)
0.0044726 TDB
period 13388.30060956615
36.66
7.5685
0.02072
d
yr
n .0268891482570069 1.5201e-05 deg/d
Q 19.82656345752487 0.007472 au
  Orbit Determination Parameters
   # obs. used (total)      140  
   data-arc span      103 days  
   first obs. used      2011-06-02  
   last obs. used      2011-09-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      5  
   norm. resid. RMS      .85403  
   source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-13 19:44:44  

Additional Information
 Earth MOID = 1.61024 au 
 T_jup = 1.201 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 10.6   0.8 14 2 parameter fit from 66 observations, autocmod 2.5c
comet total magnitude slope K1 12.   n/a 14 autocmod 2.5c
comet nuclear magnitude M2 14.2   0.6 14 from 61 observations, autocmod 2.5c
comet nuclear magnitude slope K2 5.   n/a 14 autocmod 2.5c
comet nuclear phase coefficient PC 0.03   n/a 14 autocmod 2.5c

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2011.0   C/2011 L1       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]
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