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40P/Vaisala 1
Classification: Jupiter-family Comet          SPK-ID: 1000101
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
:
Orbital Elements at Epoch 2457164.5 (2015-May-22.0) TDB
Reference: JPL K148/6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6315951692149036 8.5488e-08  
a 4.939261391287887 5.7651e-08 AU
q 1.819647757060774 4.1669e-07 AU
i 11.49272807846579 5.7417e-06 deg
node 133.8396878154063 5.4066e-05 deg
peri 47.28179490507222 5.5308e-05 deg
M 16.80526262663897 6.1162e-06 deg
tp 2456977.330859880799
(2014-Nov-15.83085988)
6.5277e-05 JED
period 4009.511302495391
10.98
7.0199e-05
1.922e-07
d
yr
n .08978650335165474 1.572e-09 deg/d
Q 8.058875025514999 9.4063e-08 AU

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] -1.093946767065542E-10 2.667E-13
  Orbit Determination Parameters
   # obs. used (total)      1083  
   data-arc span      27859 days (76.27 yr)  
   first obs. used      1939-01-18  
   last obs. used      2015-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .84307  
   data source      ORB  
   producer      Ryan S. Park  
   solution date      2015-May-12 21:20:18  

Additional Information
 Earth MOID = .845737 AU 
 T_jup = 2.534 
[ 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 5.5 mag n/a ICQ 2004 Handbook  
comet total magnitude slope K1 30.0   n/a ICQ 2004 Handbook  
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 | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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