Errai (Gamma Cephei) (stars.astro.illinois.edu)

author

Jim Kaler

excerpt

Errai (Gamma Cephei) is the among the visually brightest stars to host a planet, and also has a low mass companion with a relatively small orbit.

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What Jim wanted to do, and it was totally his vision, was to get back to the darkness of the original Grimm’s fairy tales. He thought it was fine to scare children. He didn’t think it was healthy for children to always feel safe. Frank Oz talking about The Dark Crystal

retrieved

2024-06-25

snippets

From the planet, the secondary star would shine with the light of a couple dozen full Moons.
“Errai” comes from Arabic and means “the Shepherd.”
Gamma Cephei is accompanied by a low mass companion (a red dwarf with a mass around 0.3 or 0.4 solar masses) that orbits with a period between 57 and 66 years at a distance of about 19 AU.
With a mass estimated to be 1.6 times that of the Sun, the star’s core is quietly fusing helium into carbon and oxygen.
The planet, with a mass of at least 1.85 times that of Jupiter, is one of the few known to lie within a double-star system, and orbits the main star Gamma Cephei A with a period of 2.47 years at an average distance of 2.05 Astronomical Units (307 million kilometers, 191 million miles)

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Errai

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STARS by Jim Kaler
website

website

http://stars.astro.illinois.edu/sow//errai.html