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C/2008 C1 (Chen-Gao)
Classification: Comet          SPK-ID: 1002495
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

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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 2454530.5 (2008-Mar-05.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9999875787277857 3.1496e-05  
a 101627.5424194194 2.5769e+05 au
q 1.262343368866691 7.6296e-06 au
i 61.78448722306108 0.00014086 deg
node 307.7824714298148 0.00031373 deg
peri 180.9286376220151 0.00064173 deg
M 359.9999986963771 4.9583e-06 deg
tp 2454573.351401846784
(2008-Apr-16.85140185)
0.00066108 TDB
period 11833563950.35645
32398532.38
4.5008e+10
1.232e+08
d
yr
n 3.042194232525832E-8 1.1571e-07 deg/d
Q 203253.82249547 5.1538e+05 au
  Orbit Determination Parameters
   # obs. used (total)      766  
   data-arc span      119 days  
   first obs. used      2008-01-30  
   last obs. used      2008-05-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   norm. resid. RMS      .80912  
   source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-13 19:44:07  

Additional Information
 Earth MOID = .277579 au 
 T_jup = 0.659 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 11.7   1. 20 from 152 observations, assumed slope, autocmod 2.5c
comet total magnitude slope K1 17.   n/a 20 autocmod 2.5c
comet nuclear magnitude M2 15.5   0.9 20 from 527 observations, autocmod 2.5c
comet nuclear magnitude slope K2 5.   n/a 20 autocmod 2.5c
comet nuclear phase coefficient PC 0.03   n/a 20 autocmod 2.5c

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2008.3   C/2008 C1       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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