Archive for June 4, 2018

06/04/2018 – Ephemeris – Ariadne’s crown

June 4, 2018 Comments off

Ephemeris for Monday, June 4th. Today the Sun will be up for 15 hours and 24 minutes, setting at 9:23, and it will rise tomorrow at 5:58. The Moon, 2 days before last quarter, will rise at 1:47 tomorrow morning.

High in the southeast at 11 p.m. can be found a small but easily spotted constellation of Corona Borealis, the Northern Crown. It is located just east or left of the kite shaped constellation of Boötes, with its bright star Arcturus at the base. The Northern Crown is a semicircle of stars, like a tiara, with a brighter star Gemma at the bottom. Despite the obvious allusion of stars to diamonds and the sound of one of the star’s name, this is not a gem studded crown. Gemma means blossom, so Corona Borealis may represent a floral crown. According to Greek mythology it belonged to Princess Ariadne, daughter of King Minos of Crete. She was abandoned by Theseus, whom she helped out of the Labyrinth of the Minotaur.

The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.


Corona Borealis finder chart

Animated Corona Borealis Finder Chart looking to the southeast at 10:30 p.m. June 4, 2018. Corona Borealis is  a small constellation, so I added its neighbors for context.  Click on the image to enlarge. Created using Stellarium and GIMP.