Two circles with eight steps of rotations. Two circles with four irregular steps of rotation.

• Inventor: Dmitry Andreev
• Mechanism: Intersecting circles
• Patents: Unknown
• Producer: Customly 3D printed
• Year: 2023
• Original Price: $0.00 USD
• Current Price: No Data

Gamma Andromedae is the third-brightest point of light in the northern constellation of Andromeda. It is a multiple star system approximately 350 light-years from Earth. The system is drifting closer to the Sun with a radial velocity in the range of −12 to −14 km/s.

Almach was the traditional name (also spelt as Almaach, Almaack, Almak, Almaak, or Alamak), derived from the Arabic العناق (al-‘anāq), "the caracal" (desert lynx).

In 1778, German physicist Johann Tobias Mayer discovered that γ Andromedae is a double star. When examined in a small telescope, it appears to be a bright, golden-yellow star next to a dimmer, indigo-blue star, separated by approximately 10 arcseconds. The pair is often considered by stargazers to be a beautiful double star with a striking contrast of color.
The brighter member, γ1 Andromedae, is the primary of the system, and is thus designated component γ Andromedae A. The fainter secondary is γ2 Andromedae or γ Andromedae B. It was later discovered that γ2 Andromedae is itself a triple star system. What appears as a single star to the naked eye is thus a quadruple star system.
γ1 Andromedae (A component) is a massive bright giant star with a spectral classification of K2+IIb, and is presently at an evolutionary stage following the asymptotic giant branch. It does not display a chemical enhancement of s-process elements. The star has an apparent visual magnitude of approximately 2.26. It has an estimated 24 times the mass of the Sun with an age of 6.5 million years.

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