Transit of Mercury November 11, 2019


 

This video shows the progress of the eclipse as I saw it from my home near Fredericksburg, Virginia. Mercury and the Sun are sized proportionately rel- ative to each other, the Sun appearing 195x larger than Mercury. The simulation takes 16½ seconds to complete, which I chose so that three seconds of the animation corresponded to one hour of transit time. The transit took almost exactly 5½ hours to complete and from Virginia we could see the whole event.

There will not be another transit until 2032, so we will go the entire decade of the 2020's with- out seeing Mercury crossing the face of the Sun. That event will also be of the November type as this one was, but unfortunately for would-be ob- servers in North America, it is still night time at the time of the transit. Observers in Africa, as well as central and eastern Europe, will have the luck of seeing it in its entirety, and South Americans will see the ending of the transit.

To add insult to injury, the next transit occurs in 2039, and that one will not be visible either to North Americans! I may actually have observed the last Mercury transit of my life on this cool day in November 2019.