Archive for February 13, 2020

02/13/2020 – Ephemeris – Orion’s Belt stars

February 13, 2020 Comments off

This is Ephemeris for Thursday, February 13th. Today the Sun will be up for 10 hours and 21 minutes, setting at 6:07, and it will rise tomorrow at 7:45. The Moon, 2 days before last quarter, will rise at 11:48 this evening.

Orion’s belt of three stars is one of the most noticeable star groupings in the sky. There are no other group of three bright stars in a straight line visible anywhere else in the sky. The star’s names from left to right are Alnitak, Alnilam and Mintaka. They are actually a bit farther away than the other bright stars of Orion. Alnilam, the center star, is over three times the distance of red giant Betelgeuse above them and over twice as far as blue white giant star Rigel below them. Alnilam is 375 thousand times brighter than the Sun according to the SIMBAD Astronomical Database. These three stars were also known as Frigga’s Spindle by the Norsemen. Frigga also known as Freya is the goddess from which we get the name of the day of the week Friday.

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


Torso of Orion centered on his belt. Created using Stellarium.

Torso of Orion centered on his belt. The torso of Orion is more upright this month. But I’m leaving it tilted so the star names don’t over print the stars. Created using Stellarium.