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220P/McNaught
Classification: Jupiter-family Comet          SPK-ID: 1000498
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2455808.5 (2011-Sep-04.0) TDB
Reference: JPL 52 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5022047919070708 1.016e-07  
a 3.113058173805873 9.3281e-08 au
q 1.549665441435089 3.4783e-07 au
i 8.13174540962458 1.0546e-05 deg
node 150.122167075099 0.00013216 deg
peri 180.7544335927493 0.000137 deg
M 112.6431509083299 2.405e-05 deg
tp 2455180.757444551365
(2009-Dec-15.25744455)
0.00013654 TDB
period 2006.223353476851
5.49
9.0173e-05
2.469e-07
d
yr
n .1794416356364849 8.0653e-09 deg/d
Q 4.676450906176658 1.4013e-07 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 1.779526805796733E-10 8.337E-11
A2 [EST] -1.343652001296701E-11 1.161E-12
  Orbit Determination Parameters
   # obs. used (total)      476  
   data-arc span      6042 days (16.54 yr)  
   first obs. used      2004-05-20  
   last obs. used      2020-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61943  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-03 09:44:31  

Additional Information
 Earth MOID = .538333 au 
 Jupiter MOID = .714987 au 
 T_jup = 2.996 
[ 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 15.7   0.7 52 2 parameter fit from 307 observations, autocmod 2.8
comet total magnitude slope K1 10.5   n/a 52 autocmod 2.8
comet nuclear magnitude M2 17.8   0.5 52 from 93 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a 52 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a 52 autocmod 2.8

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2010.0   220P/2009 H2       
 2004.5   220P/2004 K2       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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