Andromedae, χ Andromedae, υ Andromedae, τ Andromedae, 56 Andromedae, β Trianguli, γ Trianguli and δ Trianguli. Consequently, the Chinese name for γ Andromedae itself is (, ). In the Babylonian star catalogues, γ Andromedae, together with Triangulum, formed the constellation known as MULAPIN () "The Plough". Astrologically, this star was considered "honourable and eminent". Stellar properties 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. γ2 Andromedae (BC component), with an overall apparent visual magnitude of 4.84, is 9.6 arcseconds away from γ1 Andromedae at a position angle of 63 degrees. γ1 and γ2 have an orbital period of approximately 5,000 years. In October 1842, Wilhelm Struve found that γ2 Andromedae was itself a double star whose components were separated by less than an arcsecond. The components are an object of apparent visual magnitude 5.5, γ Andromedae B, and an A-type main-sequence star with apparent visual magnitude 6.3, γ Andromedae C. They have an orbital period of about 64 years and a high eccentricity (ovalness) of 0.927. Spectrograms taken from 1957 to 1959 revealed that γ Andromedae B was itself a spectroscopic binary, composed of two B-type main-sequence stars orbiting each other with a period of 2.67 days. The two orbits may be coplanar. At present the angular distance between both stars is 0.16 arcsecond . Almach as a name was the name of United States navy ship. See also NGC 752 References External links Almaak (Gamma Andromedae) at The Internet Encyclopedia of Science Image ALMACH Almaak on AstroDwarf 4 5 Spectroscopic binaries K-type bright giants B-type main-sequence stars A-type main-sequence stars Andromeda (constellation) Andromedae, Gamma BD+41 0395 Andromedae, 57 012533 4 0603 009640 Almach