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401P/McNaught
Classification: Jupiter-family Comet          SPK-ID: 1002389
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2454733.5 (2008-Sep-24.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .582001654894012 1.4937e-06  
a 5.692879912826602 6.3716e-07 au
q 2.379614382448641 8.6738e-06 au
i 12.86501789179284 4.3226e-05 deg
node .09535091211131905 6.3875e-05 deg
peri 310.2448793465337 0.00071414 deg
M 63.1497538170701 0.00014563 deg
tp 2453863.206736030550
(2006-May-07.70673603)
0.0018752 TDB
period 4961.311107190919
13.58
0.00083292
2.28e-06
d
yr
n .0725614645447685 1.2182e-08 deg/d
Q 9.006145443204563 1.008e-06 au
  Orbit Determination Parameters
   # obs. used (total)      264  
   data-arc span      5310 days (14.54 yr)  
   first obs. used      2006-04-29  
   last obs. used      2020-11-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      1  
   norm. resid. RMS      .65422  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:28:45  

Additional Information
 Earth MOID = 1.38983 au 
 Jupiter MOID = .281737 au 
 T_jup = 2.572 
[ 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 10.9   0.6 31 2 parameter fit from 169 observations, autocmod 2.9c
comet total magnitude slope K1 14.5   n/a 31 autocmod 2.9c
comet nuclear magnitude M2 15.2   0.7 31 from 68 observations, autocmod 2.9c
comet nuclear magnitude slope K2 5.   n/a 31 autocmod 2.9c
comet nuclear phase coefficient PC 0.03   n/a 31 autocmod 2.9c

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2019.9   401P/2020 R3       
 2006.3   401P/2006 H1       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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