It has a supermassive black hole in its centre. NGC 206 is a star cloud in the Andromeda Galaxy.
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The cluster was discovered by Caroline Herschel in 1783, but may have been observed by Giovanni Batista Hodierna before 1654. Messier 31 (NGC 224), better known as the Andromeda Galaxy, is a spiral galaxy approximately 2.5 million light years distant. It is shared with Pegasus, although it's not formally part of that constellation.
It has an apparent size of 0.3’ x 0.3’ and an actual size of 25,000 light years. This category only includes cookies that ensures basic functionalities and security features of the website. They include the dwarf spheroidal galaxies NGC 147, NGC 185 and the Cassiopeia Dwarf (Andromeda VII) in Cassiopeia constellation, Andromeda I, Andromeda II, Andromeda III, Andromeda V, Andromeda VIII, Andromeda IX and Andromeda X in Andromeda constellation, Andromeda VI, also known as the Pegasus Dwarf Spheroidal galaxy, in Pegasus constellation, and Andromeda XXII, also known as Pisces VI or Triangulum I, located in the constellation Pisces. Radio astronomers have mapped sources of radio emissions within the galaxy, and it remains an object of intense observation.
It is a multiple star system. Andromeda has three stars brighter than magnitude 3.00 and three stars located within 10 parsecs (32.6 light years) of Earth.
The two stars are separated by about 10 arcseconds on the sky.
The Blue Snowball Nebula can be seen in a small refractor telescope, but only appears as a star-like object with some nebulosity.
Image: Donald Pelletier. It contains eight globular clusters in the halo that surrounds it.
Andromeda is one of the original constellations listed by the Greco-Roman scientist Ptolemy almost 2,000 years ago. NGC 69 is a lenticular (S0) galaxy with an apparent magnitude of 14.7. In the story, it was the goddess Athena who commemorated the princess Andromeda by placing her image among the stars, next to the constellations representing her husband Perseus and mother Cassiopeia.
The two components are designated GX Andromedae (Groombridge 34 A) and GQ Andromedae (Groombridge 34 B). Image: Adam Block/Mount Lemmon SkyCenter/University of Arizona.
It is 1,900 times more luminous than the Sun and 3-4 times more massive.
It is 2,000 times more luminous than the Sun. NGC 72a is another elliptical (E3) galaxy in the group. It has a visual magnitude of 14.7 and is 287 million light years distant. More recently, the orbiting Hubble Space Telescope (named in Hubble's honor) has been studying the Andromeda Galaxy, taking detailed images of its billions of stars. It appears spread over Andromeda’s spiral arms and is believed to be on the side that is closer to us. It is both less massive and less luminous than the Sun.
It is believed to contain an intermediate-mass black hole in its centre. Upsilon Andromedae is 44 light years distant.
These cookies will be stored in your browser only with your consent. The galaxy is 40,000 light years across and has an apparent size of 24’’ x 12’’. The galaxy was independently discovered by Caroline Herschel a decade later.
NGC 891 is part of a small group of galaxies bound together by gravity. Only the brightest central region of the Andromeda Galaxy is visible through a small telescope but, in a larger telescope, the Andromeda Galaxy is about six times as wide as the full Moon. Andromeda is located directly next to Cassiopeia, and is also connected to a boxy shape of stars that make up the constellation Pegasus.
Upsilon Andromedae is another binary star system in the Andromeda constellation, composed of a yellow-white dwarf and a fainter red dwarf. It is mandatory to procure user consent prior to running these cookies on your website.
Among other notable deep sky objects, Andromeda constellation contains the famous Andromeda Galaxy (Messier 31) and the dwarf elliptical galaxies Messier 32 (Le Gentil) and Messier 110. Alpheratz is a binary star located less than 100 light-years away from us.
It also shows nearby deep-sky objects. Iota Andromedae is a B-type main sequence dwarf, bluish white in colour.
In the 1920s, the Andromeda Galaxy was known as the Andromeda Nebula, and for a long time, astronomers thought it was a nebula inside our own galaxy.
NGC 891 was discovered by William Herschel on October 6, 1784. The night skies of September and October herald the return of the constellation Andromeda. Articles from Britannica Encyclopedias for elementary and high school students. NGC 68 Group, image: Adam Block/Mount Lemmon SkyCenter/University of Arizona.
It is also known as the Chained Maiden, Persea (wife of Perseus), or Cepheis (daughter of Cepheus). The nearest star is Ross 248 (spectral class M6V), also known as HH Andromedae. NGC 71 is either an elliptical or lenticular galaxy (E5/S0) about 130,000 light years across, located about 310 million light years from the Sun. The galaxy is still occasionally known by the astronomer’s last name, Le Gentil.
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