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82P/Gehrels 3
Classification: Encke-type Comet          SPK-ID: 1000031
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 2455600.5 (2011-Feb-08.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1228436023814659 4.31e-07  
a 4.142151524005956 3.0939e-07 AU
q 3.633314709187186 1.922e-06 AU
i 1.125906251496336 2.67e-05 deg
node 239.4617259875922 0.0016924 deg
peri 226.3510356473145 0.0016897 deg
M 45.78576051994936 0.00011331 deg
tp 2455208.879577925085
(2010-Jan-12.37957792)
0.00093338 JED
period 3079.196465144254
8.43
0.00034499
9.445e-07
d
yr
n .1169136182361572 1.3099e-08 deg/d
Q 4.650988338824726 3.474e-07 AU
  Orbit Determination Parameters
   # obs. used (total)      115  
   data-arc span      12922 days (35.38 yr)  
   first obs. used      1975-10-27  
   last obs. used      2011-03-14  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   condition code      0  
   fit RMS      .85149  
   data source      ORB  
   producer      Alan B. Chamberlin  
   solution date      2011-Mar-16 14:54:31  

Additional Information
 Earth MOID = 2.64987 AU 
 T_jup = 3.027 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 5. mag n/a ICQ 2003 Handbook  
comet total magnitude slope K1 20.0   n/a ICQ 2003 Handbook  
diameter diameter 1.46 km n/a Lamy,P.L.,Toth,I.,Fernandez,Y.R.,Weaver,H.A. (2004) Comets II, pp. 223-264  

82P/Gehrels 3          Discovered 1975-Oct-27 by Gehrels, Tom at Palomar Mountain Observatory, California (675)
discovered on plate/photo taken on discovery date as well as 10/28,30
Reference: comet.disLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1993.2       1993 XIV   1992v 
 1984.7   82P/1984 P1   1985 IV   1984l 
 1976.3   82P/1975 U1   1977 VII   1975o 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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