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Sagittarius (constellation)

 

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Sagittarius (constellation)


 
 

Features

The constellation's brighter stars (from left to right on the map: t, ?, s, f, ?, e, d, ? and ?2 Sagittarii) form an easily recognizable asterismAsterism (astronomy) Summary

In astronomy, an asterism is a pattern of stars seen in Earth's sky which is not an official constellation....
 called the Teapot. The Milk Dipper is part of the Teapot. The stars d SgrDelta Sagittarii

Delta Sagittarii is a star system in the constellation Sagittarius....
 (Kaus Media), e SgrEpsilon Sagittarii

Epsilon Sagittarii is a binary star in the constellation Sagittarius....
 (Kaus Australis), ? SgrZeta Sagittarii

Zeta Sagittarii is the third brightest star system in the constellation Sagittarius....
 (Ascella), and f SgrPhi Sagittarii Summary

Phi Sagittarii is a star in the constellation Sagittarius....
 form the body of the pot; ? SgrLambda Sagittarii

Lambda Sagittarii is a star within the constellation Sagittarius....
 (Kaus Borealis) is the point of the lid; ?2 SgrGamma Sagittarii

The Bayer designation Gamma Sagittarii is shared by two star systems in the constellation Sagittarius, ?1 Sagittarii a...
 (Alnasl) is the tip of the spout; and s SgrSigma Sagittarii

Sigma Sagitarii is the second brightest star system in the constellation Sagittarius....
 (Nunki) and t SgrFacts About Tau Sagittarii

Tau Sagittarii is a star in the constellation Sagittarius, 120 light years from Earth....
 the handle. The Milky WayMilky Way Overview

The Milky Way , is a barred spiral galaxy which forms part of the Local Group....
 can be imagined as the steam rising from the spout.

a SgrAlpha Sagittarii

Alpha Sagittarii is a star in the constellation of Sagittarius....
 (Rukbat) is not the brightest star of the constellation, having a magnitude of only 3.96 (not shown on the main map as it is located below the map's southeastern corner, north is up).

Deep-sky objects

The Milky WayMilky Way

The Milky Way , is a barred spiral galaxy which forms part of the Local Group....
 as seen from the EarthEarth

Earth is the third planet in the solar system in terms of distance from the Sun, and the fifth largest....
 is at its densest as it passes through Sagittarius, as this is where the galactic centerGalactic Center

The Galactic Center is the rotational center of the Milky Way galaxy....
 lies. Consequently, Sagittarius contains many star clusters and nebulae. One of the brightest of the star clusters is Messier 55Messier 55

Globular Cluster M55 is a globular cluster in the constellation Sagittarius....
, about 7.5° west of d Sgr.

The constellation contains nebulae such as the Lagoon NebulaLagoon Nebula

The Lagoon Nebula is a giant interstellar cloud and H II region, in the constellation Sagittarius....
 (Messier 8), near ? Betelgeuse, beautiful in telescopes; the Omega NebulaOmega Nebula

The Omega Nebula is an H II region in the constellation Sagittarius....
 (Messier 17), also known as the Swan or Horseshoe Nebula, near the border with ScutumScutum

Scutum is a small constellation, one of the 88 modern constellations....
; and the Trifid NebulaTrifid Nebula

The Trifid Nebula is an H II region at right ascension 18h 02.3m and declination -23 02', located in Sagittarius....
 (Messier 20), a large nebula containing some very young, hot stars. The grouping of Lagoon Nebula, Trifid Nebula, and NGC 6559 is often called the Sagittarius triplet.

In 1999 a violent outburst at V4641 Sgr revealed the location of the closest known black hole to Earth.

The complex radio source Sagittarius AFacts About Sagittarius A

Sagittarius A is a complex radio source at the center of our galaxy, the Milky Way....
 is also here. Astronomers believe that one of its components, known as Sagittarius A*, is associated with a supermassive black holeSupermassive black hole

** Kerr, or rotating, black hole** Kerr-Newman and Reissner-Nordstrm, or charged and rotating black hole...
 at the center of the galaxyGalactic Center

The Galactic Center is the rotational center of the Milky Way galaxy....
.

The Sagittarius Dwarf Elliptical GalaxySagittarius Dwarf Elliptical Galaxy

The Sagittarius Dwarf Elliptical Galaxy is an elliptically looped shaped satellite galaxy of the Milky Way Galaxy....
 is located just outside the Milky WayMilky Way

The Milky Way , is a barred spiral galaxy which forms part of the Local Group....
.

Mythology

The Greek legends tell us that Sagittarius is a centaurCentaur

This article is on the mythological creatures....
, half human, half horse. He was the son of SaturnSaturn Overview

Saturn is the sixth planet from the Sun....
 and Plyilyra and is said to have changed himself into a horse to escape his jealous wife, RheaFacts About Rhea

Rhea may refer to,* Rhea , in Greek mythology the sister and wife of Cronus and the mother of many of the other major gods...
.

Sagittarius has the rough appearance of a stick-figure archer drawing its bow, and when including the fainter stars, appears to have a horse-like body. The Greeks identified such a figure as a centaurCentaur

This article is on the mythological creatures....
, whereas earlier cultures, such as the Babylonians, identified it as the god Pabilsag (which also had wings and a lion's head).

In Greek mythologyGreek mythology Overview

Greek mythology consists in part of a large collection of narratives that explain the origins of the world and detail the l...
, Sagittarius was always identified as ChironChiron

In Greek mythology, Chiron — sometimes transliterated Cheiron or rarely Kiron — was held as the superlative cen...
, aiming his bow at the ScorpionScorpius

Scorpius is one of the constellations of the zodiac....
, although the more usual identification of Chiron was with the constellation CentaurusCentaurus Overview

Centaurus is a bright constellation of the southern hemisphere....
. The constellation SagittaSagitta

Sagitta, being Latin for Arrow, is the third-smallest of all constellations ....
 was sometimes considered to be an arrow fired by Sagittarius.

Astrology

The Western astrological signAstrological sign

Both Western and Vedic astrology employ a zodiac which divides the ecliptic into twelve astrological signs of equal length....
 Sagittarius of the tropical zodiac differs from the astronomical constellation and the HinduHindu

A Hindu , as per modern definition, is an adherent of the philosophies and scriptures of Hinduism, the religious, phi...
 astrological sign of the sidereal zodiacSidereal astrology

Sidereal astrology is the system of astrology used by some western and all Jyotish astrologers which bases their interpretat...
.

See also

  • Sagitta

External links