Transits of Venus from -2000 à +3000

 

Horrocks observation of the 1639 Venus transit


Presentation

- The canon includes all the transits of Venus from -2000 to +3000.

- They are computed for a geocentric observer.

- Some grazing transits visible only on some points of the Earth have been also included (eg  -943)

- The text file is organized on the basis of one record per transit


- The difference between TDB and UT is quadratically extrapolated in the distant past or in the future from known values of TD - UT.

- The difference reaches several hours in the distance past, so JD xxxxxxx.500 is not the beginning of a calendar day in UT.

- Computations are based on planetary theories developped at the Institut de Mécanique Céleste in Paris (IMCCE)

 

Download your Venus file (~ 10 kB)

 

    

Meaning of the fields

    JD             date (TU)      R_S(")  Delta(") ratio   R_P(")
2453164.848   8/ 6/ 2004   8:20   945.4   -626.5   0.663   28.88 
   t_1       t_2       t_3       t_4     l_beg  l_end  phi  V(°/day) lat   node td-tu(s) 
  5: 13.6   5: 32.8  11:  6.6  11: 25.9    98    14    23    1.60   -0.17  -1    68.4
JD Date of mid-transit in Julian days (dynamical time)
date Date of mid transit in UT
R_S Radius of the Sun in arcsec
delta Distance at closest approach in arcsec (negative when south of the centre)
ratio Ratio delta/R_s
R_P Radius of the planet in arcsec
t_1 First contact in UT
t_2 Second contact in UT
t_3 Third contact in UT
t_4 Fourth contact in UT
l_beg Longitude of the sub solar point at ingress
l_end Longitude of the sub-solar point at egress
phi Latitude of the subsolar point
V Relative displacement of the planet on the solar disk in deg/day
lat Ecliptic latitude of the planet
node +1 : ascending node, -1 : descending node
TDB-UT value of TDB-UT in sec(measured or extrapolated)


Statistics

Period
Desc. Node
/cy
Asc. Node
/cy
-2000 to 3000
36
0.72
31
0.62
theory
0.65
0.54

 

 

 

 

 

Historical and soon to be transits

       JD          Date UT     time   Sun R   min D    ratio  Venus R
                                       "       "                 "
   2317110.722   7/12/ 1631   5:19   975.0   939.4     0.964   31.59 :: not seen by Gassendi
   2320030.268   4/12/ 1639  18:25   974.7  -523.3     0.537   31.58 :: Horrocks
   2364408.722   6/ 6/ 1761   5:19   945.0  -571.9     0.605   28.86 
   2367328.434   3/ 6/ 1769  22:25   945.3   608.8     0.644   28.87 :: Cook at Tahiti
   2405866.671   9/12/ 1874   4: 6   974.6   831.1     0.853   31.57 
   2408786.213   6/12/ 1882  17: 6   974.3  -634.9     0.652   31.55 
   2453164.848   8/ 6/ 2004   8:20   945.4  -626.5     0.663   28.88 
   2456084.563   6/ 6/ 2012   1:29   945.7   554.4     0.586   28.90 
   2494622.620  11/12/ 2117   2:48   974.3   723.0     0.742   31.55 
   2497542.171   8/12/ 2125  16: 2   974.0  -733.8     0.753   31.53 
   2541920.987  11/ 6/ 2247  11:33   945.7  -692.2     0.732   28.91 
   2544840.700   9/ 6/ 2255   4:38   946.0   492.9     0.521   28.92 
   2583378.582  13/12/ 2360   1:43   973.9   627.1     0.644   31.52 
   2586298.125  10/12/ 2368  14:45   973.5  -836.3     0.859   31.49

Transit Gems

       
       The  most central transits (min D/R < 0.15)
       JD          Date UT     time   Sun R   min D     ratio
                                       "       "
    1876250.522  22/11/  424  23: 3   976.1     9.0     0.009   
    1654359.604  22/ 5/ -183  23: 3   943.3   -11.2     0.012   
    1565603.466  22/ 5/ -426  18:41   943.1    61.6     0.065   
    1743115.746  23/ 5/   60   3:21   943.4   -86.3     0.091   
    1965006.472  23/11/  667  22:22   975.9   -96.7     0.099   
    1787494.575  22/11/  181  23:38   976.3   116.7     0.120   
    1476847.323  22/ 5/ -669  14: 5   943.0   139.2     0.148   

	
  The most grazing transits  (min D/R> 0.900)  
       JD          Date UT     time   Sun R   min D     ratio
                                       "       "
    1077447.000  20/11/-1763  23:10   977.3   967.2     0.990  
    1923547.750  22/ 5/  554   4:50   944.0   931.7     0.987  
    2317110.722   7/12/ 1631   5:19   975.0   939.4     0.964  :: Kepler admonitio
    2675054.088  13/12/ 2611  13:35   973.2  -931.3     0.957  
    1435390.345  19/11/ -783  13:59   977.0  -902.7     0.924  
    2012303.884  22/ 5/  797   8:30   944.2   867.7     0.919  
    1296415.319  23/ 5/-1163  11: 7   942.8  -860.9     0.913  
    2808189.371  16/ 6/ 2976  19:45   946.7  -853.8     0.902  

  The doubtful or partial transits  (min D/R> 0.900)  
       JD          Date UT     time   Sun R   min D     ratio
                                       "       "
    1385171.464  23/ 5/ -920  16: 5   942.8  -943.3     1.001  

  The longest transits  (min D/R> 0.900)  
       JD          Date UT     time   Sun R   min D     ratio
                                       "       "
      1876250.522  22/11/  424  23: 3   976.1     9.0   488.5
   1965006.472  23/11/  667  22:22   975.9   -96.7   487.0
   1654359.604  22/ 5/ -183  23: 3   943.3   -11.2   486.9
   1565603.466  22/ 5/ -426  18:41   943.1    61.6   486.7
   1787494.575  22/11/  181  23:38   976.3   116.7   485.8
   1743115.746  23/ 5/   60   3:21   943.4   -86.3   485.4
   1476847.323  22/ 5/ -669  14: 5   943.0   139.2   482.2
   1831871.885  24/ 5/  303   7:26   943.6  -157.7   480.5
   2053762.417  23/11/  910  21:27   975.6  -206.6   478.5
   1698738.635  23/11/  -62   0:15   976.5   230.5   475.4
   1388091.177  21/ 5/ -912   9:14   942.8   221.1   475.1
   1920628.029  24/ 5/  546  11:30   943.8  -232.9   472.7
   2142518.372  23/11/ 1153  20:36   975.3  -307.7   465.9
   1299335.039  21/ 5/-1155   4:27   942.8   296.5   464.4
   2009384.172  24/ 5/  789  15:24   944.0  -306.2   462.2
   1609982.685  23/11/ -305   0:30   976.7   335.5   460.8

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© F. Mignard. Last udpate 7/12/07