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

[ show orbit diagram ]
Orbital Elements at Epoch 2455651.5 (2011-Mar-31.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.000062639259691 1.7683e-06  
a -7701.872022235388 217.41 AU
q .482439561707391 2.0455e-06 AU
i 1.839502454221408 4.6946e-05 deg
node 323.2339232711316 0.0009382 deg
peri 343.7983983139406 0.00093584 deg
M -.0002387306410079686 1.0108e-05 deg
tp 2455815.218794106376
(2011-Sep-10.71879411)
0.00034452 JED
period n/a
n/a
n/a
n/a
d
yr
n 1.458174929219511E-6 6.1742e-08 deg/d
Q n/a n/a AU
  Orbit Determination Parameters
   # obs. used (total)      2222  
   data-arc span      235 days  
   first obs. used      2010-12-10  
   last obs. used      2011-08-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   fit RMS      .6129  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-13 19:44:41  

Additional Information
 Earth MOID = .03063 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 mag 0.9 37 from 354 observations, assumed slope, autocmod 2.5c
comet total magnitude slope K1 11.   n/a 37 autocmod 2.5c
comet nuclear magnitude M2 13.7 mag 0.8 37 from 1786 observations, autocmod 2.5c
comet nuclear magnitude slope K2 5.   n/a 37 autocmod 2.5c
comet nuclear phase coefficient PC 0.03   n/a 37 autocmod 2.5c

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