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39P/Oterma
Classification: Chiron-type Comet          SPK-ID: 1000177
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 2452200.5 (2001-Oct-18.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 0.245513956937926 7.3662e-08  
a 7.25148931544269 4.3077e-07 AU
q 5.47114747991526 7.3304e-07 AU
i 1.94283105545965 1.7398e-05 deg
node 331.5811183554936 0.00059054 deg
peri 56.27834376123234 0.00069798 deg
M 338.345849678193 0.00017526 deg
tp 2452629.520347695068
(2002-Dec-21.02034770)
0.0035075 JED
period 7132.458345164751
19.53
0.00063555
1.74e-06
d
yr
n .05047348089232821 4.4975e-09 deg/d
Q 9.031831150970113 5.3653e-07 AU
  Orbit Determination Parameters
   # obs. used (total)      237  
   data-arc span      21764 days (59.59 yr)  
   first obs. used      1942-02-17  
   last obs. used      2001-09-19  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   condition code      0  
   fit RMS      1.1036  
   data source      ORB  
   producer      M.S.W. Keesey  
   solution date      2002-Nov-26 14:10:36  

Additional Information
 Earth MOID = 4.47591 AU 
 T_jup = 3.005 
[ 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 15.0   n/a ICQ 2003 Handbook  
comet nuclear magnitude M2 10. mag n/a ICQ 2003 Handbook  
comet nuclear magnitude slope K2 10.0   n/a ICQ 2003 Handbook  

39P/Oterma          Discovered 1943-Apr-08 by Oterma, Liisi at Turku, Finland
discovered on plate/photo taken on discovery date
Reference: comet.disLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2003.0   39P/2001 P3       
 1963.9       1958 IV   
 1944.4   39P/1943 G1   1942 VII   
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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