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C/1965 S1-A (Ikeya-Seki)
Classification: Comet          SPK-ID: 1001121
Ephemeris | Orbit Diagram | Orbital Elements ]

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Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet has stopped working because of a recent Java upgrade, here is a possible workaround.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


Orbital Elements at Epoch 2439040.5 (1965-Oct-07.0) TDB
Reference: SAO_2008 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 0.999915 n/a  
a 91.6000000 n/a AU
q 0.007786 n/a AU
i 141.8642 n/a deg
node 346.9947 n/a deg
peri 69.0486 n/a deg
M -0.0159460 n/a deg
tp 2439054.6837
(1965-Oct-21.18370000)
n/a JED
period 321420
880.00
n/a
n/a
d
yr
n 0.0011242 n/a deg/d
Q 183.1922140 n/a AU
  Orbit Determination Parameters
   # obs. used (total)      119  
   data-arc span      115 days  
   first obs. used      1965-09-21  
   last obs. used      1966-01-14  
   producer      Marsden  

Additional Information
 T_jup = -0.029 
 2008 SAO Comet Catalog 

Ephemeris | Orbit Diagram | Orbital Elements ]

no physical parameters available

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1965.8   C/1965 S1-A       
Ephemeris | Orbit Diagram | Orbital Elements ]
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