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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2456699.5 (2014-Feb-11.0) TDB
Reference: JPL 70 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4498337392730598 9.0941e-08  
a 3.868223952083209 1.0896e-07 au
q 2.128166307372006 3.9985e-07 au
i 23.52512861957269 7.2163e-06 deg
node 74.95146124275483 1.8671e-05 deg
peri 352.1493966979468 2.9384e-05 deg
M 158.7272553475192 1.3072e-05 deg
tp 2455474.277827812246
(2010-Oct-04.77782781)
6.4363e-05 TDB
period 2778.854715416619
7.61
0.00011741
3.215e-07
d
yr
n .1295497738700697 5.4736e-09 deg/d
Q 5.608281596794413 1.5797e-07 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 1.135814156509649E-8 1.773E-10
A2 [EST] 7.111704850091039E-10 2.3E-11
  Orbit Determination Parameters
   # obs. used (total)      2585  
   data-arc span      6437 days (17.62 yr)  
   first obs. used      2002-10-05  
   last obs. used      2020-05-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .83732  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-26 12:44:59  

Additional Information
 Earth MOID = 1.14426 au 
 Jupiter MOID = .243755 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. 70 2 parameter fit from 765 observations, autocmod 2.8
comet total magnitude slope K1 5.5   n/a 70 autocmod 2.8

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2010.8   240P/2010 P1       
 2003.2   240P/2002 X2       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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