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C/2009 F6 (Yi-SWAN)
Classification: Comet          SPK-ID: 1003019
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2454972.5 (2009-May-21.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .997512330328695 4.2642e-06  
a 512.1897873070631 0.87816 au
q 1.27415899983593 1.0903e-06 au
i 85.76480576086456 3.9619e-05 deg
node 278.6790016737545 4.631e-05 deg
peri 129.7722945374815 0.00012646 deg
M .001153513663202778 2.9757e-06 deg
tp 2454958.933586777743
(2009-May-07.43358678)
0.00013264 TDB
period 4233940.97166751
11591.90
10889
29.81
d
yr
n 8.502716556726493E-5 2.1867e-07 deg/d
Q 1023.10541561429 1.7541 au
  Orbit Determination Parameters
   # obs. used (total)      489  
   data-arc span      330 days  
   first obs. used      2009-04-06  
   last obs. used      2010-03-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   norm. resid. RMS      .70638  
   source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-13 19:44:19  

Additional Information
 Earth MOID = .504959 au 
 T_jup = 0.113 
[ 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 9.7   1. 28 2 parameter fit from 80 observations, autocmod 2.5c
comet total magnitude slope K1 13.   n/a 28 autocmod 2.5c
comet nuclear magnitude M2 13.2   1. 28 from 320 observations, autocmod 2.5c
comet nuclear magnitude slope K2 5.   n/a 28 autocmod 2.5c
comet nuclear phase coefficient PC 0.03   n/a 28 autocmod 2.5c

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2009.3   C/2009 F6       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]
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