Saturday 17 November 2018

Moon 11th November 2018

It's not only Remembrance Sunday and Armistice Day on the same day, but the Moon is exactly the same phase as it was 100 years ago!

There's a very bright star to the bottom right of the moon, but I'm not sure what it is as I only have a hand-held planisphere! There are a few possibilities but I think it might be Altair in the Aquila constellation - the 12th brightest star in the sky. From the Arabic for "the flying eagle", Altair isn't spherical, but flattened at the poles because it rotates very rapidly (286 km/s at the equator!).

Here are the Moon details:
Time 17:15.
Distance 247,883 miles.
Waxing crescent phase.
210 degrees SW compass point (azimuth).
Altitude 10.8 degrees.

Compare that with the results from 100 years ago at the same time:
Time 17:15.
Distance 234,773 miles.
Waxing crescent phase.
165 degrees S compass point (azimuth).
Altitude 25.0 degrees.


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