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Sagittarius Constellation

Sagittarius (Pronounciation:Sadge-e-tar-e-us, Abbrev:Sgr) is a constellation, one of 88 constellations that the night sky is divided into. The sky is not divided up equally between the constellations. Sagittarius takes up 867.432 sq. degrees of the night sky which equates to 2.1% of the night sky. The constellation gets its name as it name means Half-Man/Half-Horse Archer . The constellation is one of the original constellations that was devised by the Ancient Greco-Egyptian astronomer Ptolemy who lived between 90 A.D. and 168 A.D.

Sagittarius is a member constellation of the Zodiac grouping, a group of 12 star signs that astrologers use to predict someones future based on their date of birth and which constellation appeared when the Sun set. The Zodiac year may be divided up equally between the twelve signs but when they appear in the night sky no longer conforms to the Zodiac calendar. Sagittarius is an equatorial constellation that can be seen by countries nearest the Equator. The brightest star in Sagittarius is Kaus Australis. There are 10 Extrasolar Planets (Exoplanets) detailed on this site.

Legend of the Constellation

He was known as Crotus, son of Pan, a Centaur. A centaur is a half-man, half-horse. Commonly mistaken for Chrion who is immortalised as Centaurus . He was the protector of Muses where he invented applause. The Muses asked Zeus when he died to turn him into a constellation as a reward for his dedication.

Items of Interest

The centre of the milky way, a giant black hole is located within this constellation. It is located near the border with Scorpius. There are a number of very large supergiant stars in this constellation, them being KW and VX Sagittarriis.

Meteor Showers

There are 13 Meteor Showers that occur during the year within this constellation based on information gathered from Adam Mickiewicz University (Poland). The ones listed as the ones I've been able to find a date range for. For others if you have the time, you can visit the AMU site, obtains the SL value then use IMO tables to calculate the date. A lot of the Meteor Showers are weak and you need to do a lot of stargazing to spot them.

NameActivityPeak ActivityClosest Star
SagittaridsJun 1 - Jul 15Jun 19

Sagittarius Constellation Map

Sagittarius Constellation Star Map

List of Named Stars in Sagittarius

StarDistanceDeclinationRight Ascension
Albaldah440.17-21 d 01 ` 24.719h 09m 45.83
Alrami169.88-40 d 36 ` 56.319h 23m 53.15
Arkab138.67-44 d 47 ` 58.719h 23m 13.06
Arkab Posterior138.67-44 d 47 ` 58.719h 23m 13.06
Arkab Prior378.38-44 d 27 ` 32.119h 22m 38.29
Ascella89.09-29 d 52 ` 48.419h 02m 36.72
Kaus Australis144.64-34 d 23 ` 03.518h 24m 10.35
Kaus Borealis77.29-25 d 25 ` 16.518h 27m 58.27
Kaus Meridionalis144.64-34 d 23 ` 03.518h 24m 10.35
KW Sagittarii7800-28 d 01`20.517h 52m 00.73
Nunki224.32-26 d 17 ` 47.718h 55m 15.92
Terebellum77.6-26 d 17 ` 58.919h 55m 50.23
VX Sagittarii1076.45-22 d 13`26.618h 08m 04.05

Objects of Interest (Galaxies, Nebulas, Supernovas, etc) in Sagittarius

NameTypeDistanceDeclinationRight Ascension
Lagoon NebulaEmission Nebula4.1-24:2318h 03m 8
M18 Open ClusterOpen Cluster4.9-17:0818h 19m 9
M21 Open ClusterOpen Cluster4.25-22:3018h 04m 6
M22 Globular ClusterGlobular Cluster9.6-11.6-23:5418h 36m 4
M23 Open ClusterOpen Cluster2.15-19.017h 56m 8
M24 Milky Way Patch Star Cloud with Open ClusterMilky Way Patch Star Cloud with Open Cluster~10-18:2918h 16m 9
M25 Open ClusterOpen Cluster2-19:1518h 31m 6
M28 Globular ClusterGlobular Cluster17.9-24:5218h 24m 5
M54 Globular ClusterGlobular Cluster87.4-30:2918h 55m 1
M55 Globular ClusterGlobular Cluster17.6-30:5819h 40
M69 Globular ClusterGlobular Cluster29.7-32:3118h 31m 4
M70 Globular ClusterGlobular Cluster29.4-32.1818h 43m 2
M75 Globular ClusterGlobular Cluster67.5-21.5520h 06m 1
Omega NebulaDiffuse Nebula42526-16:1118h 20m 8
Trifid NebulaEmission/Reflection Nebula5.2-23:0218h 02m 6

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