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C/2010 X1 (Elenin)
Classification: Hyperbolic Comet          SPK-ID: 1003113
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

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 two-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 is not working, here are some notes that might help.
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 2455651.5 (2011-Mar-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.000068095226441 1.8496e-06  
a -7084.513117079299 192.42 au
q .4824215249311249 2.6549e-06 au
i 1.83957593943795 4.5064e-05 deg
node 323.235099758002 0.00089743 deg
peri 343.798053273921 0.00089506 deg
M -.0002706073326346699 1.1025e-05 deg
tp 2455815.219533945734
(2011-Sep-10.71953395)
0.00036038 TDB
period n/a
n/a
n/a
n/a
d
yr
n 1.652871383840884E-6 6.7341e-08 deg/d
Q n/a n/a au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] -4.490851666247193E-8 1.175E-8
A2 [EST] 6.163129316527091E-8 7.965E-9
  Orbit Determination Parameters
   # obs. used (total)      2235  
   data-arc span      271 days  
   first obs. used      2010-12-10  
   last obs. used      2011-09-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   norm. resid. RMS      .59542  
   source      ORB  
   producer      Shantanu Naidu  
   solution date      2018-Aug-29 15:52:04  

Additional Information
 Earth MOID = .0306308 au 
 Jupiter MOID = .148357 au 
 T_jup = 0.861 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 10.4   0.9 38 from 354 observations, assumed slope, autocmod 2.6n
comet total magnitude slope K1 11.   n/a 38 autocmod 2.6n
comet nuclear magnitude M2 13.7   0.8 38 from 1786 observations, autocmod 2.6n
comet nuclear magnitude slope K2 5.   n/a 38 autocmod 2.6n
comet nuclear phase coefficient PC 0.03   n/a 38 autocmod 2.6n

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]
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