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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 2454973.5 (2009-May-22.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9975143424739534 4.422e-06  
a 512.6044057937434 0.91213 au
q 1.274158999145848 1.1385e-06 au
i 85.7647855400708 4.1384e-05 deg
node 278.6790256429147 4.7651e-05 deg
peri 129.7723269890618 0.00013108 deg
M .001237036211202921 3.3113e-06 deg
tp 2454958.933613114178
(2009-May-07.43361311)
0.00013779 TDB
period 4239083.085366305
11605.98
11315
30.98
d
yr
n 8.492402549097287E-5 2.2667e-07 deg/d
Q 1023.934652588341 1.822 au
  Orbit Determination Parameters
   # obs. used (total)      487  
   data-arc span      330 days  
   first obs. used      2009-04-06  
   last obs. used      2010-03-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .65944  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:31:30  

Additional Information
 Earth MOID = .504727 au 
 Jupiter MOID = .723915 au 
 T_jup = 0.113 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 1.955436153632775E-11 2.207250809750008E-12 4.926328205609411E-10 -3.905851894540087E-11 5.066334640102314E-10 -1.035016234275465E-10
q 2.207250809750008E-12 1.296151346617565E-12 1.159326870638786E-10 -2.420473391132522E-11 1.028166450500853E-10 -3.536213854050427E-11
tp 4.926328205609411E-10 1.159326870638786E-10 1.89865999531395E-8 -2.232979355129734E-9 1.768563981334014E-8 -4.146891169743345E-9
node -3.905851894540087E-11 -2.420473391132522E-11 -2.232979355129734E-9 2.270605952371658E-9 -2.114654778764419E-9 4.254617003965214E-10
peri 5.066334640102314E-10 1.028166450500853E-10 1.768563981334014E-8 -2.114654778764419E-9 1.718206523142827E-8 -3.850124650185762E-9
i -1.035016234275465E-10 -3.536213854050427E-11 -4.146891169743345E-9 4.254617003965214E-10 -3.850124650185762E-9 1.712621622449279E-9

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. 29 2 parameter fit from 80 observations, autocmod 2.9c
comet total magnitude slope K1 13.   n/a 29 autocmod 2.9c
comet nuclear magnitude M2 13.2   1. 29 from 320 observations, autocmod 2.9c
comet nuclear magnitude slope K2 5.   n/a 29 autocmod 2.9c
comet nuclear phase coefficient PC 0.03   n/a 29 autocmod 2.9c

[ 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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