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JPL Small-Body Database Browser
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139P/Vaisala-Oterma
Classification: Jupiter-family Comet          SPK-ID: 1000238
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 2455503.5 (2010-Nov-03.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2475186417841233 1.8594e-07  
a 4.522204305414618 7.1616e-08 au
q 3.402874437868077 8.3464e-07 au
i 2.328696151421489 1.9724e-05 deg
node 242.3798617465659 0.0003495 deg
peri 165.717428581879 0.00035449 deg
M 94.96665345360645 5.0671e-05 deg
tp 2454576.899929536437
(2008-Apr-20.39992954)
0.0004969 TDB
period 3512.559548387612
9.62
8.344e-05
2.284e-07
d
yr
n .1024893656721785 2.4346e-09 deg/d
Q 5.641534172961159 8.9342e-08 au
  Orbit Determination Parameters
   # obs. used (total)      544  
   data-arc span      28975 days (79.33 yr)  
   first obs. used      1939-10-07  
   last obs. used      2019-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .71986  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-15 08:30:47  

Additional Information
 Earth MOID = 2.41247 au 
 Jupiter MOID = .050311 au 
 T_jup = 2.956 
[ 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 6.7   0.7 39 from 280 observations, assumed slope, autocmod 2.6q
comet total magnitude slope K1 19.   n/a 39 autocmod 2.6q
comet nuclear magnitude M2 14.4   0.6 39 from 186 observations, autocmod 2.6q
comet nuclear magnitude slope K2 5.   n/a 39 autocmod 2.6q
comet nuclear phase coefficient PC 0.03   n/a 39 autocmod 2.6q

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1998.7   139P/1998 WG22       
 1941.0   139P/1939 TN       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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