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The Astronomy Club of Akron

Tuesday, June 5, 2012 at 5:00PM

Transit of Venus across the disk of the Sun!


The planet Venus, one planet inward toward the Sun
from the Earth, will be able to be seen moving across
the disk of the Sun.  The last time a transit like this
was visible was on June 8, 2004 and the next time
will be December 11, 2117 - 105
years from now!

 

Data below is for Akron, Ohio on Tuesday June 5, 2012

    Event

    Time

Altitude

Azimuth

First Contact:

6:04:30 pm (EDT)

29.7 275.5
Second Contact:

6:22:11 pm (EDT)

26.4 278.2
Sunset:

8:58:28 pm (EDT)

0 302.2
 

Due to the 8:13 ratio of the orbits of Earth and Venus (the Earth makes 8 orbits around the Sun in almost exactly the same time as Venus completes 13 orbits), coupled with the 3.39 inclination of Venus' orbit to the ecliptic, transits occur predictably, but with an odd cadence; always in pairs whose elements are separated by almost exactly 8 years and time between  pairs alternating between 105 years and 121 years.


Chart of Venus transit dates & times
between 1527 a.d. and 2359 a.d.

.

Date (UT) of
transit center
Time (UT) of
transit center
Duration
of transit
.
Dec 7, 1631 05:21 3.4 hours
Dec 4, 1639 18:26 7.2 hours
.
Jun 6, 1761 05:19  6.8 hours
Jun 3, 1769 22:25  6.6 hours
.
Dec 9, 1874 04:07  5.0 hours
Dec 6, 1882 17:05  6.6 hours
.
Jun 8, 2004 08:20  6.4 hours
Jun 6, 2012* *01:30*  6.9 hours
.
Dec 11, 2117 02:52  5.9 hours
Dec 8, 2125 16:06  5.8 hours
.
Jun 11, 2247 11:42  6.0 hours
Jun 9, 2255 04:47  7.2 hours

As you can see, Venus transits don't happen often.
Let's hope for clear skies since we won't get another chance!


Venus transit

*
Image of the last Venus transit captured by member John Crilly at 6:56:32am EDT on 6/8/2004


*Note: "Jun 6, 2012 at 1:30 am" is the UT designation for Jun 5, 2012 at 9:30pm EDT
All data calculated using Guide9 software available from www.ProjectPluto.com

Be sure to hit the REFRESH / RELOAD button on your browser
(or the <F5> key on your keyboard) for up-to-date information

Click on the chart above for full details.
The darker blue the squares are, the better the viewing!

Live AccuWeather Satellite Mosaic


Solar System objects rise/set times on this date from Akron, Ohio...
 
 
Jet Stream (updates automatically to latest available image)
    The Jet Stream affects astronomical "seeing" (steadiness of the air)
    If we're in a gray area, seeing will not be as good as in a white area.
    If we're in a white area, the shorter the arrows, the better.

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Last modified: 03/25/12

 

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