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C/2007 Q3 (Siding Spring)
Classification: Hyperbolic Comet          SPK-ID: 1002472
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2455065.5 (2009-Aug-22.0) TDB
Reference: JPL 117 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.000238170243923 9.0489e-07  
a -9454.117293866555 35.92 au
q 2.251689421956088 3.7063e-07 au
i 65.65049174650157 9.7429e-06 deg
node 149.4126758216975 1.5533e-05 deg
peri 2.092756908862635 1.8954e-05 deg
M -4.961084905425576E-5 2.8275e-07 deg
tp 2455111.770486418878
(2009-Oct-07.27048642)
8.2181e-05 TDB
period n/a
n/a
n/a
n/a
d
yr
n 1.072192079528581E-6 6.1105e-09 deg/d
Q n/a n/a au
  Orbit Determination Parameters
   # obs. used (total)      1335  
   data-arc span      1470 days (4.02 yr)  
   first obs. used      2007-08-25  
   last obs. used      2011-09-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   norm. resid. RMS      .74101  
   source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-13 19:44:01  

Additional Information
 Earth MOID = 1.26187 au 
 T_jup = 0.767 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 7.2   1. 117 from 204 observations, assumed slope, autocmod 2.5c
comet total magnitude slope K1 8.   n/a 117 autocmod 2.5c
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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