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246P/NEAT
Classification: Jupiter-family Comet          SPK-ID: 1000486
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2455763.5 (2011-Jul-21.0) TDB
Reference: JPL 203 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2850510099045508 4.3631e-08  
a 4.025800812792793 4.1953e-08 au
q 2.878242225431646 1.7698e-07 au
i 15.97087656915459 4.6447e-06 deg
node 78.79310754529197 2.6925e-05 deg
peri 176.3150780215079 3.3881e-05 deg
M 291.8840958785561 1.6456e-05 deg
tp 2456321.742473516056
(2013-Jan-29.24247352)
0.00013753 TDB
period 2950.372501956011
8.08
4.6118e-05
1.263e-07
d
yr
n .1220184908045782 1.9073e-09 deg/d
Q 5.17335940015394 5.3911e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] 4.31867626996351E-9 5.671E-11
  Orbit Determination Parameters
   # obs. used (total)      3997  
   data-arc span      6528 days (17.87 yr)  
   first obs. used      2003-03-07  
   last obs. used      2021-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57616  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jan-30 21:13:01  

Additional Information
 Earth MOID = 1.86392 au 
 Jupiter MOID = .0924061 au 
 T_jup = 2.914 
[ 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 6.4   0.8 203 from 1792 observations, assumed slope, autocmod 2.8
comet total magnitude slope K1 14.   n/a 203 autocmod 2.8
comet nuclear magnitude M2 11.3   0.6 203 from 1701 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a 203 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a 203 autocmod 2.8

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2013.1   246P/2010 V2       
 2005.0   246P/2004 F3       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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