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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 2455780.5 (2011-Aug-07.0) TDB
Reference: JPL 205 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2850451871365939 4.3453e-08  
a 4.025912537044647 4.1937e-08 au
q 2.878345544527196 1.7621e-07 au
i 15.97082427101026 4.6339e-06 deg
node 78.79232617487955 2.6842e-05 deg
peri 176.3099585906544 3.376e-05 deg
M 293.9634133407424 1.6378e-05 deg
tp 2456321.723999899563
(2013-Jan-29.22399990)
0.00013682 TDB
period 2950.49532116494
8.08
4.6102e-05
1.262e-07
d
yr
n .12201341158469 1.9065e-09 deg/d
Q 5.173479529562099 5.3891e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] 4.337078668599794E-9 5.656E-11
  Orbit Determination Parameters
   # obs. used (total)      4019  
   data-arc span      6588 days (18.04 yr)  
   first obs. used      2003-03-07  
   last obs. used      2021-03-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57806  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-25 21:42:37  

Additional Information
 Earth MOID = 1.86339 au 
 Jupiter MOID = .0926164 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   0.8 205 from 1813 observations, assumed slope, autocmod 2.9b
comet total magnitude slope K1 14.   n/a 205 autocmod 2.9b
comet nuclear magnitude M2 11.3   0.6 205 from 1701 observations, autocmod 2.9b
comet nuclear magnitude slope K2 5.   n/a 205 autocmod 2.9b
comet nuclear phase coefficient PC 0.03   n/a 205 autocmod 2.9b

[ 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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