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

[ show orbit diagram ]
Orbital Elements at Epoch 2455758.5 (2011-Jul-16.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7765212519592289 0.002052  
a 5.561717039442158 0.044161 AU
q 1.242925560931557 0.0015473 AU
i 15.2723383832699 0.080272 deg
node 296.0964602238851 0.012566 deg
peri 263.6169667998349 0.11972 deg
M 13.25587756758994 0.14093 deg
tp 2455582.092215817294
(2011-Jan-20.59221582)
0.26609 JED
period 4790.841042545958
13.12
57.06
0.1562
d
yr
n .07514338230030027 0.00089498 deg/d
Q 9.880508517952757 0.078453 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.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      7  
   fit RMS      .89546  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-18 11:57:24  

Additional Information
 Earth MOID = .380652 AU 
 T_jup = 2.192 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 13.3 mag 0.6 8 from 41 observations, assumed slope, autocmod 2.5c
comet total magnitude slope K1 14.   n/a 8 autocmod 2.5c
comet nuclear magnitude M2 16.7 mag 0.2 8 from 7 observations, autocmod 2.5c
comet nuclear magnitude slope K2 5.   n/a 8 autocmod 2.5c
comet nuclear phase coefficient PC 0.03   n/a 8 autocmod 2.5c

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2011.1   P/2011 NO1       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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