Constellation List
Star List
By Season
Alphabetical
Latitudes
Minneapolis, MN (45°N)
NorthPole (90°N)
Prudhoe Bay, AK (70°N)
St.Petersburg,
Russia(60°N)
Prague, C.R. (50°N)
Philadelphia, PA (40°N)
Albuquerque, NM (35°N)
New Orleans, LA (30°N)
Santiago, Cuba (20°N)
Caracas,
Venezuela (10°N)
Quito, Ecuador (0°N)
Port Moresby,
New Guinea(10°S)
Porto Alegre,
Brazil (30°S)
Montevideo,
Uruguay(35°S)
Queenstown, NZ (45°S)
South Pole (90°S)
Bibliography and Credits
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Almach B
Gamma2 Andromedae
Description of the Star
Almach B is a blue B8V main sequence star. This spectral type implies an effective temperature of 12000 K, a diameter about 3 times that of the sun, a luminosity of about 170 times that of the sun, and a mass about 5 times that of the sun.
Almach C is a white A0V main sequence star. The spectral type implies an effective temperature of 9900 K, a diameter 2.5 times that of the sun, a luminosity of about 50 times that of the sun, and a mass maybe three times that of the sun.
B and C revolve in a 61 year orbit about their common center of mass. The orbit is an elongated ellipse with a semimajor axis of about 32 AU.
Almach B and C currently appear separated by 9.58 arc seconds from A. At the distance of the star system, this corresponds to a separation of at leat 1040 AU or 26 times the radius of the solar system out to Pluto.
Almach B itself has an even closer companion than Almach C that revolves in a 2.67 day orbit.
Other Designations For This Star
Flamsteed |
57 Andromedae |
Hipparcos Identifier (HIP Number) |
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Harvard Revised (HR Number) |
604 |
Henry Draper Catalog (HD Number) |
12534 |
Bonner Durchmusterung (BD Number) |
BD+41 395 |
Smithsonian Astrophysical
Observatory compendium (SAO Number) |
37735 |
Fundamental Katalog (FK5 Number) |
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