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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2455516.5 (2010-Nov-16.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2475258899275365 1.8595e-07  
a 4.522310018517272 7.1455e-08 au
q 3.40292120665557 8.347e-07 au
i 2.328730061858098 1.9725e-05 deg
node 242.37758960 0.00034897 deg
peri 165.7253932402583 0.00035397 deg
M 96.29128733807012 5.0653e-05 deg
tp 2454576.942386880037
(2008-Apr-20.44238688)
0.00049682 TDB
period 3512.682715889483
9.62
8.3253e-05
2.279e-07
d
yr
n .1024857720202152 2.429e-09 deg/d
Q 5.641698830378974 8.9142e-08 au
  Orbit Determination Parameters
   # obs. used (total)      546  
   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      .71932  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Apr-06 08:43:18  

Additional Information
 Earth MOID = 2.41255 au 
 Jupiter MOID = .0503807 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 7.2   0.7 40 from 280 observations, assumed slope, autocmod 2.8
comet total magnitude slope K1 18.   n/a 40 autocmod 2.8
comet nuclear magnitude M2 14.4   0.7 40 from 189 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a 40 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a 40 autocmod 2.8

[ 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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