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P/2011 NO1 (Elenin)
Classification: Jupiter-family Comet [NEO]          SPK-ID: 1003138
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2455758.5 (2011-Jul-16.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7766683813315823 0.0019931  
a 5.564808912335272 0.042944 AU
q 1.242797781972273 0.0015037 AU
i 15.28100571061748 0.077972 deg
node 296.0978344978848 0.012189 deg
peri 263.6029798321476 0.11602 deg
M 13.24755643189973 0.13679 deg
tp 2455582.055921428927
(2011-Jan-20.55592143)
0.25636 JED
period 4794.836588326002
13.13
55.503
0.152
d
yr
n .07508076518738777 0.00086911 deg/d
Q 9.886820042698272 0.076298 AU
  Orbit Determination Parameters
   # obs. used (total)      57  
   data-arc span      22 days  
   first obs. used      2011-07-07  
   last obs. used      2011-07-29  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   condition code      7  
   fit RMS      .9145  
   data source      ORB  
   producer      Otto Matic  
   solution date      2011-Sep-14 21:24:48  

Additional Information
 Earth MOID = .380673 AU 
 T_jup = 2.192 
[ 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 13.3 mag 0.6 7 from 41 observations, assumed slope, autocmod 2.5a
comet total magnitude slope K1 14.   n/a 7 autocmod 2.5a
comet nuclear magnitude M2 16.7 mag 0.2 7 from 7 observations, autocmod 2.5a
comet nuclear magnitude slope K2 5.   n/a 7 autocmod 2.5a
comet nuclear phase coefficient PC 0.03   n/a 7 autocmod 2.5a

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2011.1   P/2011 NO1       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]
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