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C/2004 Q2 (Machholz)
Classification: Comet          SPK-ID: 1000507
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2453459.5 (2005-Mar-30.0) TDB
Reference: JPL 102 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9995013165564023 7.8457e-07  
a 2416.445813892907 3.8022 au
q 1.205041519739395 2.9095e-07 au
i 38.58894877332359 8.2628e-06 deg
node 93.62289508735844 1.6202e-05 deg
peri 19.50470293910827 3.0601e-05 deg
M .0005317663345696867 1.2553e-06 deg
tp 2453395.411167984285
(2005-Jan-24.91116798)
2.6467e-05 TDB
period 43387439.22991589
118788.33
1.024e+05
280.4
d
yr
n 8.297332278411536E-6 1.9583e-08 deg/d
Q 4831.686586266074 7.6025 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 1.224170918456526E-8 1.559E-10
A2 [EST] -1.087129091581906E-9 1.85E-10
A3 [EST] -2.28569555373114E-9 1.04E-10
  Orbit Determination Parameters
   # obs. used (total)      3612  
   data-arc span      743 days (2.03 yr)  
   first obs. used      2004-08-27  
   last obs. used      2006-09-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .52171  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:30:43  

Additional Information
 Earth MOID = .249261 au 
 Jupiter MOID = 1.97264 au 
 T_jup = 1.066 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 11.2   1. 102 2 parameter fit from 467 observations, autocmod 2.9c
comet total magnitude slope K1 4.5   n/a 102 autocmod 2.9c

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2005.1   C/2004 Q2       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]
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