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40P/Vaisala 1
Classification: Jupiter-family Comet          SPK-ID: 1000101
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | 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.


:
Orbital Elements at Epoch 2457262.5 (2015-Aug-28.0) TDB
Reference: JPL K148/7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6316152020645802 8.4318e-08  
a 4.939864962861835 5.1746e-08 au
q 1.819771156172117 4.122e-07 au
i 11.49264281940788 5.647e-06 deg
node 133.8401678570807 5.2173e-05 deg
peri 47.28885502172881 5.3735e-05 deg
M 25.59861596735432 5.64e-06 deg
tp 2456977.342350093810
(2014-Nov-15.84235009)		 5.9039e-05 TDB
period 4010.246260858229
10.98		 6.3012e-05
1.725e-07		 d
yr
n .08977004816730551 1.4105e-09 deg/d
Q 8.059958769551553 8.443e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] -1.091448490022975E-10 2.455E-13
   Orbit Determination Parameters
   # obs. used (total)      1128  
   data-arc span      27930 days (76.47 yr)  
   first obs. used      1939-01-18  
   last obs. used      2015-07-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   norm. resid. RMS      .84439  
   source      ORB  
   producer      Ryan S. Park  
   solution date      2015-Aug-18 21:51:16  

Additional Information
 Earth MOID = .847879 au 
 Jupiter MOID = .0864788 au 
 T_jup = 2.534 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 11.7   1. K148/7 2 parameter fit from 360 observations, autocmod 2.6
comet total magnitude slope K1 13.   n/a K148/7 autocmod 2.6
comet nuclear magnitude M2 14.8   0.7 K148/7 from 380 observations, autocmod 2.6
comet nuclear magnitude slope K2 5.   n/a K148/7 autocmod 2.6
comet nuclear phase coefficient PC 0.03   n/a K148/7 autocmod 2.6
diameter diameter 4.2 km n/a Scotti,J (1994) BAAS 26:1375  

40P/Vaisala 1          Discovered 1939-Feb-08 by Vaisala, Y. 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 
 1992.9       1993 VIII   1992u 
 1981.9       1982 V   1981l 
 1971.0       1971 VII   1970q 
 1960.0       1960 IV   1959i 
 1949.0   40P/1949 Y1   1949 V   1949h 
 1938.0   40P/1939 CB   1939 IV   1939b 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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