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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 2455650.5 (2011-Mar-30.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.000064048145741 1.8591e-06  
a -7532.31733028152 218.63 AU
q .4824309581374332 2.4495e-06 AU
i 1.839475154920383 4.7959e-05 deg
node 323.2338494998166 0.00094556 deg
peri 343.798953487708 0.00093397 deg
M -.0002483452129773215 1.0812e-05 deg
tp 2455815.219354417315
(2011-Sep-10.71935442)
0.00037603 JED
period n/a
n/a
n/a
n/a
d
yr
n 1.507686900885618E-6 6.5641e-08 deg/d
Q n/a n/a AU
  Orbit Determination Parameters
   # obs. used (total)      2209  
   data-arc span      234 days  
   first obs. used      2010-12-10  
   last obs. used      2011-08-01  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   fit RMS      .58415  
   data source      ORB  
   producer      Otto Matic  
   solution date      2011-Sep-14 21:24:26  

Additional Information
 Earth MOID = .030627 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 36 from 354 observations, assumed slope, autocmod 2.5a
comet total magnitude slope K1 11.   n/a 36 autocmod 2.5a
comet nuclear magnitude M2 13.7 mag 0.8 36 from 1786 observations, autocmod 2.5a
comet nuclear magnitude slope K2 5.   n/a 36 autocmod 2.5a
comet nuclear phase coefficient PC 0.03   n/a 36 autocmod 2.5a

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