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JPL Small-Body Database Browser
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189P/NEAT
Classification: Jupiter-family Comet [NEO]          SPK-ID: 1000400
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 2454742.5 (2008-Oct-03.0) TDB
Reference: JPL 60 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5976669763900531 5.6928e-08  
a 2.917422445623617 2.306e-08 au
q 1.173775393695276 1.7398e-07 au
i 20.40139174336421 1.2251e-05 deg
node 282.1994634177981 9.4066e-06 deg
peri 15.30160545818737 3.5019e-05 deg
M 86.05161692288 7.1398e-06 deg
tp 2454307.435205835760
(2007-Jul-25.93520584)
4.0516e-05 TDB
period 1820.109040362289
4.98
2.1579e-05
5.908e-08
d
yr
n .1977903477301243 2.345e-09 deg/d
Q 4.661069497551958 3.6841e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] -3.63195907218592E-10 5.57E-11
A2 [EST] -4.917098761653614E-11 8.138E-14
  Orbit Determination Parameters
   # obs. used (total)      1451  
   data-arc span      5573 days (15.26 yr)  
   first obs. used      2002-07-30  
   last obs. used      2017-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .74118  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Nov-03 15:44:53  

Additional Information
 Earth MOID = .166734 au 
 Jupiter MOID = .66659 au 
 T_jup = 2.909 
[ 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 18.1   0.7 60 from 349 observations, assumed slope, autocmod 2.6i
comet total magnitude slope K1 17.   n/a 60 autocmod 2.6i
comet nuclear magnitude M2 20.6   0.8 60 from 895 observations, autocmod 2.6i
comet nuclear magnitude slope K2 5.   n/a 60 autocmod 2.6i
comet nuclear phase coefficient PC 0.03   n/a 60 autocmod 2.6i

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2007.6   189P/2007 N2       
 2002.6   189P/2002 O5       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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