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10/31/2019 – Ephemeris – The perfect Halloween star

31 Oct 2019, 04:01 UTC
10/31/2019 – Ephemeris – The perfect Halloween star
(200 words excerpt, click title or image to see full post)

Ephemeris for Halloween, Thursday, October 31st. Today the Sun will be up for 10 hours and 14 minutes, setting at 6:33, and it will rise tomorrow at 8:20. The Moon, half way from new to first quarter, will set at 9:22 this evening.
Not all the ghosts and goblins out tonight will be children. One is out every night, because it’s a star. Its name is Algol, from the Arabic for Ghoul Star or Demon Star. It’s the second brightest star in the constellation Perseus the hero, rising in the northeast this evening. The star is located where artists have drawn the severed head of Medusa, whom he had slain. Medusa was so ugly that she turned all who gazed upon her to stone. Algol is her still glittering eye. Astronomers finally found out what was wrong with Algol. It does a slow 6 hour wink every 2 days 21 hours because it is two very close stars that eclipse each other in that period. It’s next nighttime minimum will be 1:46 a.m. on November 12th.
The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.
Perseus, Cassiopeia, Andromeda with Algol ...

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