Supermoon!

Our closest neighbor.
Christopher K.
Posts: 5481
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

2020 Supermoon

Post by Christopher K. »

Full Moon is at 9:35pm on Tuesday 7 April; at this time it will be rising in the east, in the constellation Virgo (beautiful B-class Spica will be to its lower right). Perigee will have taken place about nine hours earlier and so this is a fantastic Supermoon on its way--the biggest and brightest of 2020!

Christopher K.
Posts: 5481
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

Re: Supermoon!

Post by Christopher K. »

Here is NOAA's forecast for 9:30pm CDT tomorrow...
precipitation potential, 2%
sky cover, 46%
relative humidity, 75%
temperature, 23˚C
surface wind, S 9 km/h

Danko's Clear Dark Sky states that during HRPO's viewing time the transparency rating will be "poor" (1 out of 5) and the seeing rating will be "poor" (2 out of 5). This is a good forecast, the poor ratings from Danko notwithstanding.

The best time to view the Supermoon will be ~8:30pm to 10:30pm. You will notice the two-tone quality of the moon—the white-grey cratered areas full of dust, and the relatively smooth blue-purple expanses (which are actually solidified lava basins).

Here is a map labelling those major old lava seas...
https://skyandtelescope.org/wp-content/ ... px_lbl.jpg

Atilla Danko's Clear Dark Sky forecast for HRPO:
https://www.cleardarksky.com/c/HghLndRdObLAkey.html

Don't forget your sketching form...
http://hrpo.lsu.edu/

Christopher K.
Posts: 5481
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

Re: Supermoon!

Post by Christopher K. »

Here we go! There's elevated humidity is NOAA's 9:30pm CDT forecast but the forecast is still good...
precipitation potential, 1%
sky cover, 39%
relative humidity, 86%
temperature, 24˚C
surface wind, SW 10 km/h

Danko's Clear Dark Sky states that during HRPO's viewing time the transparency rating will be "below average" (2 out of 5) and the seeing rating will be "poor" (2 out of 5). The humidity will, however, hit an all-surfaces-covered-in-moisture level at around 10:15pm.

More information:
https://solarsystem.nasa.gov/news/922/w ... supermoon/

Christopher K.
Posts: 5481
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

Re: Supermoon!

Post by Christopher K. »

This Supermoon was the first Full Moon of Spring, and it was amazing! I spied all unaided-eye maria except for the Sea of Cold (always difficult for me) then used my Orion 10x50 Explorer WA binocular to view some lunar rays. Meanwhile, Jeff Dai got this beautiful shot...
https://apod.nasa.gov/apod/ap200410.html

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