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

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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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 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 1.818374669007249E-11 1.998831701790537E-12 4.574749517529877E-10 -3.825869933253324E-11 4.71483509099862E-10 -9.361061450541514E-11
q 1.998831701790537E-12 1.188852960255407E-12 1.055712270225524E-10 -2.222024811742962E-11 9.355439468034068E-11 -3.224264831268186E-11
tp 4.574749517529877E-10 1.055712270225524E-10 1.759344123864938E-8 -2.085032576847046E-9 1.642407767338902E-8 -3.776054739392778E-9
node -3.825869933253324E-11 -2.222024811742962E-11 -2.085032576847046E-9 2.144590088597112E-9 -1.990337804636902E-9 3.715001538558435E-10
peri 4.71483509099862E-10 9.355439468034068E-11 1.642407767338902E-8 -1.990337804636902E-9 1.599178824290507E-8 -3.502958427318148E-9
i -9.361061450541514E-11 -3.224264831268186E-11 -3.776054739392778E-9 3.715001538558435E-10 -3.502958427318148E-9 1.569660121160103E-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. 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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