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166P/NEAT (2001 T4)
Classification: Chiron-type Comet          SPK-ID: 1000356
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

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Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet has stopped working because of a recent Java upgrade, here is a possible workaround.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


Orbital Elements at Epoch 2452819.5 (2003-Jun-29.0) TDB
Reference: JPL 50 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3831014579229702 8.5656e-06  
a 13.88283939168301 0.00022815 AU
q 8.564303380618808 2.2699e-05 AU
i 15.36840608994296 3.0314e-05 deg
node 64.48884992736954 7.0096e-05 deg
peri 321.8788868930617 0.0006374 deg
M 7.700857012594934 0.00044868 deg
tp 2452415.340832021408
(2002-May-20.84083202)
0.013971 JED
period 18893.65043842897
51.73
0.46574
0.001275
d
yr
n .0190540203531962 4.697e-07 deg/d
Q 19.20137540274721 0.00031555 AU
  Orbit Determination Parameters
   # obs. used (total)      168  
   data-arc span      2742 days (7.51 yr)  
   first obs. used      2001-08-27  
   last obs. used      2009-02-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      2  
   fit RMS      .79049  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-13 19:41:45  

Additional Information
 Earth MOID = 7.58249 AU 
 T_jup = 3.284 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 4.5 mag n/a ICQ 2005 Handbook  
comet total magnitude slope K1 10.0   n/a ICQ 2005 Handbook  

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2002.4   166P/2001 T4       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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