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255P/Levy
Classification: Jupiter-family Comet [NEO]          SPK-ID: 1002422
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2454436.5 (2007-Dec-02.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .672091196274492 3.3732e-07  
a 3.024106526879721 2.7882e-07 au
q .9916311535676303 1.1079e-06 au
i 18.33189995216884 4.5197e-05 deg
node 279.7822841007105 5.3443e-05 deg
peri 179.5784420639241 9.6084e-05 deg
M 78.82695047262973 1.9462e-05 deg
tp 2454015.902894119036
(2006-Oct-07.40289412)
0.00015421 TDB
period 1920.852667892072
5.26
0.00026565
7.273e-07
d
yr
n .1874167686140453 2.5919e-08 deg/d
Q 5.056581900191812 4.662e-07 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 7.288535066076535E-9 6.563E-10
A2 [EST] -4.08122807811744E-9 2.043E-10
  Orbit Determination Parameters
   # obs. used (total)      500  
   data-arc span      1941 days (5.31 yr)  
   first obs. used      2006-10-02  
   last obs. used      2012-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      1  
   norm. resid. RMS      .91499  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 11:13:05  

Additional Information
 Earth MOID = .00816779 au 
 Jupiter MOID = .154483 au 
 T_jup = 2.792 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 11.5   1. 38 from 137 observations, assumed slope, autocmod 2.8
comet total magnitude slope K1 38.   n/a 38 autocmod 2.8
comet nuclear magnitude M2 15.2   1. 38 from 109 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a 38 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a 38 autocmod 2.8

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2012.0   255P/2011 Y1       
 2006.8   255P/2006 T1       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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