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The Andromeda Galaxy is a barred spiral galaxy and is the nearest major galaxy to the Milky Way. It was originally named the Andromeda Nebula and is cataloged as Messier 31 , M31 , and NGC 224 . Andromeda has a D 25 isophotal diameter of about 46.56 kiloparsecs (152,000 light-years ) [8] and is approximately 765 kpc (2.5 million light-years ...
The constellation's most obvious deep-sky object is the naked-eye Andromeda Galaxy (M31, also called the Great Galaxy of Andromeda), the closest spiral galaxy to the Milky Way and one of the brightest Messier objects. Several fainter galaxies, including M31's companions M110 and M32, as well as the more distant NGC 891, lie within Andromeda.
Extragalactic planet. An extragalactic planet, also known as an extragalactic exoplanet or an extroplanet, [1] [2] [3] is a star -bound planet or rogue planet located outside of the Milky Way Galaxy. Due to the immense distances to such worlds, they would be very hard to detect directly. However, indirect evidence suggests that such planets exist.
38° 40′ 12″. 9.9. M5e-M6e. a variable star in the constellation of Andromeda. It is classified as a semiregular variable pulsating giant star, and varies from an apparent visual magnitude of 14.5 at minimum brightness to a magnitude of 9.9 at maximum brightness, with a period of approximately 238.3 days. [17] [18]
The Andromeda–Milky Way collision is a galactic collision predicted to occur in about 4.5 billion years between the two largest galaxies in the Local Group—the Milky Way (which contains the Solar System and Earth) and the Andromeda Galaxy.
Upsilon Andromedae b ( υ Andromedae b, abbreviated Upsilon And b, υ And b ), formally named Saffar / ˈsæfɑːr /, is an extrasolar planet approximately 44 light-years away from the Sun in the constellation of Andromeda. The planet orbits its host star, the F-type main-sequence star Upsilon Andromedae A, approximately every five days.
Upsilon Andromedae c ( υ Andromedae c, abbreviated Upsilon And c, υ And c ), formally named Samh / ˈsɑːm / (a homophone with the star Salm ), is an extrasolar planet orbiting the Sun -like star Upsilon Andromedae A every 241.3 days at an average distance of 0.83 AU (124 million km; 77 million mi). Its discovery in April 1999 by Geoffrey ...
14 Andromedae b (abbreviated 14 And b ), formally named Spe / ˈspiː /, is an exoplanet approximately 249 light years away in the constellation of Andromeda . The 186-day period planet orbits about 83% the Earth - Sun distance from the giant star 14 Andromedae. It has a minimum mass 4.8 times the mass of Jupiter.