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Sagittarius Constellation

Sagittarius (Pronounciation:Sadge-e-tar-e-us, Abbrev:Sgr, Latin:Sagittarii) 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

The map was generated using Night Vision, an awesome free application by Brian Simpson.


List of Named Stars in Sagittarius


StarDistanceDeclinationRight Ascension
70 Sagittarii1087.21-24 d 54`55.018h 21m 31.36
Albaldah543.61-21 d 01 ` 24.719h 09m 45.83
Alnasl95.93-30 d 25 ` 25.118h 05m 48.52
Alrami181.20-40 d 36 ` 56.319h 23m 53.15
Arkab Posterior135.90-44 d 47 ` 58.719h 23m 13.06
Arkab Prior326.16-44 d 27 ` 32.119h 22m 38.29
Ascella88.15-29 d 52 ` 48.419h 02m 36.72
Chi1 Sagittarii250.89-24 d 30 ` 30.419h 25m 16.45
Chi2 Sagittarii1630.82-24 d 24 ` 43.519h 25m 22.34
Chi3 Sagittarii465.95-23 d 57 ` 44.719h 25m 29.67
Eta Sagittarii148.26-36 d 45 ` 40.618h 17m 37.73
Iota Sagittarii181.20-41 d 52 ` 06.319h 55m 15.68
Kappa1 Sagittarii217.44-42 d 02 ` 57.720h 22m 27.48
Kappa2 Sagittarii326.16-42 d 25 ` 22.520h 23m 53.19
Kaus Australis141.81-34 d 23 ` 03.518h 24m 10.35
Kaus Borealis77.66-25 d 25 ` 16.518h 27m 58.27
Kaus Media362.40-29 d 49 ` 40.918h 20m 59.62
KW Sagittarii-28 d 01`20.517h 52m 00.73
Mu Sagittarii-1-21 d 03 ` 31.818h 13m 45.81
Nu1 Sagittarii1087.21-22 d 44 ` 41.418h 54m 10.18
Nu2 Sagittarii271.80-22 d 40 ` 16.518h 55m 07.07
Nunki232.97-26 d 17 ` 47.718h 55m 15.92
Omicron Sagittarii141.81-21 d 44 ` 28.919h 04m 40.93
Phi Sagittarii232.97-26 d 59 ` 26.818h 45m 39.35
Pistol Star-28 d 50` 0417h 46m 15.3s
Psi Sagittarii296.51-25 d 15 ` 23.819h 15m 32.40
Rho Sagittarii125.45-17 d 50 ` 50.119h 21m 40.38
Rho2 Sagittarii326.16-18 d 18 ` 29.419h 21m 50.83
RS Sagittarii1087.21-34 d 06`26.018h 17m 36.25
RY Sagittarii3261.63-33 d 31`20.319h 16m 32.76
Tau Sagittarii120.80-27 d 40 ` 11.319h 06m 56.44
Terebellum85.83-26 d 17 ` 58.919h 55m 50.23
Theta1 Sagittarii543.61-35 d 16 ` 34.519h 59m 44.17
Theta2 Sagittarii155.32-34 d 41 ` 51.519h 59m 51.28
Upsilon Sagittarii1630.82-15 d 57 ` 18.019h 21m 43.62
V3879 Sagittarii1087.21-19 d 17`02.918h 42m 55.11
V3894 Sagittarii1087.21-26 d 58`29.817h 48m 27.84
V3961 Sagittarii296.51-39 d 52`27.619h 51m 50.59
V4024 Sagittarii1087.21-19 d 17`25.019h 08m 16.70
V4050 Sagittarii543.61-36 d 40`10.218h 22m 53.08
V4089 Sagittarii407.70-40 d 02`04.719h 34m 08.48
V4190 Sagittarii296.51-20 d 50`25.618h 35m 21.31
V4198 Sagittarii652.33-18 d 44`17.319h 07m 08.33
V4199 Sagittarii815.41-19 d 14`03.919h 21m 37.11
V4333 Sagittarii250.89-18 d 51`10.419h 36m 26.06
V4387 Sagittarii1630.82-18 d 39`41.718h 15m 30.76
V4405 Sagittarii815.41-19 d 36`22.918h 46m 01.15
V4434 Sagittarii1087.21-36 d 27`12.720h 16m 23.61
V505 Sagittarii407.70-14 d 36`11.119h 53m 06.39
VX Sagittarii815.41-22 d 13`26.618h 08m 04.05
W Sagittarii815.41-29 d 34`48.318h 05m 01.22
X Sagittarii1087.21-27 d 49 ` 50.717h 47m 33.63
Xi1 Sagittarii1630.82-20 d 39 ` 22.818h 57m 20.48
Xi2 Sagittarii362.40-21 d 06 ` 23.818h 57m 43.78
Y Sagittarii1087.21-18 d 51`35.918h 21m 22.99


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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