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C/2004 H6 (SWAN)
Classification: Hyperbolic Comet          SPK-ID: 1000500
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2453216.5 (2004-Jul-30.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.000630942914649 2.2847e-05  
a -1230.353854144839 44.529 au
q .7762830467836959 1.5247e-05 au
i 107.6638462722945 0.00065313 deg
node 317.2453748004821 6.378e-05 deg
peri 269.0491256633715 0.0015837 deg
M .001788498862334253 9.7079e-05 deg
tp 2453138.187760192673
(2004-May-12.68776019)
0.00066213 TDB
period n/a
n/a
n/a
n/a
d
yr
n 2.283805017880383E-5 1.2398e-06 deg/d
Q n/a n/a au
  Orbit Determination Parameters
   # obs. used (total)      285  
   data-arc span      102 days  
   first obs. used      2004-05-21  
   last obs. used      2004-08-31  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .77973  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:30:40  

Additional Information
 Earth MOID = .358016 au 
 Jupiter MOID = 2.77629 au 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 10.3   1. 19 2 parameter fit from 31 observations, autocmod 2.9c
comet total magnitude slope K1 25.5   n/a 19 autocmod 2.9c
comet nuclear magnitude M2 16.0   0.8 19 from 164 observations, autocmod 2.9c
comet nuclear magnitude slope K2 5.   n/a 19 autocmod 2.9c
comet nuclear phase coefficient PC 0.03   n/a 19 autocmod 2.9c
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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