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240P/NEAT
Classification: Jupiter-family Comet          SPK-ID: 1000422
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456728.5 (2014-Mar-12.0) TDB
Reference: JPL 72 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4497940361253981 9.0709e-08  
a 3.868349720289416 1.0872e-07 au
q 2.128389086455885 3.9881e-07 au
i 23.52461400788739 7.1491e-06 deg
node 74.95183490685812 1.8651e-05 deg
peri 352.1522281845853 2.9293e-05 deg
M 162.4782527795118 1.3166e-05 deg
tp 2455474.262558949663
(2010-Oct-04.76255895)
6.4046e-05 TDB
period 2778.990240563799
7.61
0.00011715
3.207e-07
d
yr
n .1295434560169465 5.4611e-09 deg/d
Q 5.608310354122946 1.5762e-07 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 1.132641089616491E-8 1.768E-10
A2 [EST] 7.101310308801959E-10 2.3E-11
  Orbit Determination Parameters
   # obs. used (total)      2615  
   data-arc span      6437 days (17.62 yr)  
   first obs. used      2002-10-05  
   last obs. used      2020-05-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .83677  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:28:04  

Additional Information
 Earth MOID = 1.14463 au 
 Jupiter MOID = .244156 au 
 T_jup = 2.757 
[ 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 12.4   1. 72 2 parameter fit from 804 observations, autocmod 2.9c
comet total magnitude slope K1 5.5   n/a 72 autocmod 2.9c

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2010.8   240P/2010 P1       
 2003.1   240P/2002 X2       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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