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199P/Shoemaker 4
Classification: Jupiter-family Comet          SPK-ID: 1000151
[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

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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.
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 2453261.5 (2004-Sep-13.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5053651422007809 1.751e-06  
a 5.95919641606714 3.3419e-07 AU
q 2.947626271858986 1.0504e-05 AU
i 24.76795536720493 3.1467e-05 deg
node 92.94891556211124 5.6102e-05 deg
peri 191.8233829371479 0.00042104 deg
M 246.7107649058724 8.2309e-05 deg
tp 2454933.614915090580
(2009-Apr-12.11491510)		 0.0012855 JED
period 5313.491338629505
14.55		 0.00044697
1.224e-06		 d
yr
n .06775206301415632 5.6993e-09 deg/d
Q 8.970766560275294 5.0308e-07 AU
   Orbit Determination Parameters
   # obs. used (total)      487  
   data-arc span      5236 days (14.34 yr)  
   first obs. used      1994-05-14  
   last obs. used      2008-09-13  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   quality code      0  
   fit RMS      .73494  
   data source      ORB  
   producer      Otto Matic  
   solution date      2008-Sep-15 11:50:19  

Additional Information
 Earth MOID = 1.93496 AU 
 T_jup = 2.550 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 11.7 mag 0.7 22 2 parameter fit from 80 observations, autocmod 2.4a
comet total magnitude slope K1 8.   n/a 22 autocmod 2.4a

Alternate Designations
 Perihelion 
Year (est.)		  New-Style 
Desig		 Roman
 Numeral 		 Year/
 Letter 
 2009.3   199P/2008 G2       
 1994.7   199P/1994 J3   1994 XXVIII   1994k 
[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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