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2. The Universe / Space, Stars and Galaxies / Constellations

Constellations: Scutum 'the Shield'

The shield of the Science, Mathematics and Engineering faculty of the h2g2 University.
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Musca | Norma | Octans | Ophiuchus | Orion | Pavo | Pegasus | Perseus | Phoenix | Pictor | Pisces | Piscis Austrinus
Puppis | Pyxis | Reticulum | Sagitta | Sagittarius | Scorpius | Sculptor | Scutum | Serpens | Sextans | Taurus
Telescopium | Triangulum | Triangulum Australe | Tucana | Ursa  Major | Ursa  Minor | Vela | Virgo | Volans | Vulpecula

Above all, taking the shield of faith,
wherewith you will be able to quench
all the fiery darts of the wicked.

– Ephesians 6:16

Above Sagittarius stands the more modern constellation  Scutum. Pronounced skoo-tem, this constellation did not exist prior to the 1600s and is therefore considered modern. It was originally called Scutum Sobiescianum in honour of Polish warrior king John Sobieski.

History

When the Ottoman Empire tried to expand and take over Vienna, pope Innocent XI sent out a call for a 'holy league' of soldiers. This was answered by Sobieski, who was put in charge of a combined force of 70,000 men. This defeated an army twice its size. At the end of the battle the king was heard to say Veni, vidi, Deus vicit, which translates as 'I came, I saw, God conquered.' This battle was the beginning of the end to the threat posed to Europe by the Ottoman Empire.

The founder of lunar topography, Johannes Hevelius (1611 - 87), delineated seven star formations in the 17th Century which are included in the 88 internationally recognised modern constellations: Scutum, Sextans, Vulpecula, Lynx, Leo Minor, Lacerta and Canes Venatici. They were introduced in his 1690 atlas Firmamentum Sobiescianum. When Hevelius drew up this star group it was the first modern constellation to be linked to a living person.

Constellation Data

Name:Scutum ('shield')
Genitive:Scuti
Short form:Sct
Area:109 sq deg
Co-ordinates1:Right Ascension 19h, Declination − 10°
Origin:Modern

Formation of the Shield

  • Alpha Scuti is located at the right corner of the shield.
  • Beta Scuti is located at top corner of the shield
  • Zeta Scuti is the strap for the shield
  • Delta and epsilon Scuti are located at the left corner of the shield
  • Gamma Scuti is located at bottom corner of the shield

Stars

The system of naming the 24 brightest stars with Greek letters goes back to Johannes Bayer (1572 - 1625) and uses a Greek letter followed by the genitive (possessive) form of the constellation name. In 1862, Prussian astronomer Friedrich W Arlander (1799 - 1875) proposed that variable stars should have a new designation. This procedure assigns the first variable without a Greek letter the designation 'R'. This is followed by the next upper-case letters through to Z. Today, when these letters are exhausted, a two-letter name is used, starting with RR and going through to ZZ. Variable stars already bearing a Greek letter are not renamed, but keep their original designation.

Star Table

StarNameDesignationMagnitudeDistance
(light years)
Spectral Classification
α SctAlpha Scuti2HD 6973+3.85174K3
β SctBeta ScutiHD 7063+4.22690G4
ζ SctZeta ScutiHD 6884+4.68191G9
γ SctGamma ScutiHD 6930+4.7291A3
δ SctDelta ScutiHD 7020+4.72187F2
η SctEta ScutiHD 7149+4.83207K2
ε SctEpsilon ScutiHD 7032+4.9523G8
R SctR ScutiHD 7066Variable32,500K0

Clusters and Nebulae

There are two Messier catalogued objects in Scutum: M11 is the Wild Duck Cluster and M26. Both are open clusters.

Catalogue  NoNameTypeMagnitudeDistance  (light years)
M11Wild Duck ClusterOpen Cluster+6.36,000
M26Bode 59Open Cluster+8.05,000
NGC 6631  Open Cluster+11.18,480
NGC 6664  Open Cluster+7.87,500
NGC 6683  Open Cluster+9.43,904
NGC 6704  Open Cluster+9.29,700
NGC 6712  Globular Cluster+8.6922,500
NGC 6649  Open Cluster+8.95,200

Reflection Nebula IC 1287

The Reflection Nebula IC 1287 shines faintly, covering about 20'  of arc within the rich star field near NGC 6649. Unlike emission nebulae, this type of cloud typically has a pale-blue sheen caused by the reflection and scattering of light by interstellar dust.

Planetary Nebula IC 1295

The Planetary Nebula is situated near the globular cluster NGC 6712. Although ninth magnitude, it is a difficult target for backyard astronomers.

Meteor Shower

The June Scutids is a minor meteor shower whose existence was finally confirmed within the past 40 years. This low-rate display (up to four per hour if you are lucky) is active between 2 June and 29 July, peaking around 27 June.


1 Current guidelines by the International Astronomical Union (IAU) use a plus sign (+) for northern constellations and a minus sign (− ) for southern ones.
2 Alpha Scuti has a Greek name: Ι ω α ν ν ι ν α (Ioannina), which translates as 'of John'. It refers to the coat of arms on the shield.
3 R Scuti is a variable with a peak brightness of +4.5 and a minimum of +8.2, with a period of 142 days.

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Entry Data
Entry ID: A34088240 (Edited)
Written and Researched by:
shagbark

Edited by:
Galaxy Babe - eclectic editor

Date: 13   May   2008


Referenced Guide Entries
Constellations: Orion 'the Hunter'
Stars
Constellations: Ursa Major 'the Great Bear'
Constellations: Taurus 'the Bull'
Constellations: Cassiopeia 'the Boastful Queen'
Constellations: Andromeda 'the Chained Maiden'
Constellations: Cygnus 'the Swan'
Constellations: Gemini 'the Twins'
Constellations: Aquila 'the Eagle'
Constellations: Apus 'the Bird of Paradise'
Constellations: Hercules 'the Strongman'
Constellations: Perseus 'the Hero'
Constellations: Pegasus 'the Winged Horse'
Constellations: Lyra 'the Lyre'
Constellations: Antlia 'the Air Pump'
Constellations: Aquarius 'the Water Carrier'
Constellations: Draco 'the Dragon'
Constellations: Pictor 'the Painter's Easel'
Constellations: Leo 'the Lion'
Constellations: Centaurus 'the Centaur'
Constellations: Cetus 'the Whale'
Constellations: Coma Berenices 'Berenice's Hair'
Constellations: Eridanus 'the River'
Constellations: Camelopardalis 'the Giraffe'
Constellations: Fornax 'the Furnace'
Constellations: Monoceros 'the Unicorn'
Constellations: Cancer 'the Crab'
Constellations: Pisces 'the Fish'
Constellations: Triangulum 'the Triangle'
Constellations: Lepus 'the Hare'
Constellations: Cepheus 'the King'
Constellation Overview
Constellations: Corona Borealis 'the Northern Crown'
Constellations: Ophiuchus 'the Serpent Bearer'
Constellations: Delphinus 'the Dolphin'
Constellations: Bootes 'the Herdsman'
Constellations: Canis Major 'the Great Dog'
Constellations: Ara 'the Altar'
Constellations: Sagittarius 'the Archer'
Constellations: Crux 'the Southern Cross'
Constellations: Libra 'the Scales'
Constellations: Scorpius 'the Scorpion'
Constellations: Ursa Minor 'the Little Bear'
Constellations: Piscis Austrinus 'the Southern Fish'
Constellations: Vulpecula 'the Fox'
Constellations: Canes Venatici 'the Hunting Dogs'
Constellations: Hydra 'the Sea Serpent'
Constellations: Aries 'the Ram'
Constellations: Capricornus 'the Sea Goat'
Constellations: Leo Minor 'the Lesser Lion'
Constellations: Virgo 'the Maiden'
Constellations: Pavo 'the Peacock'
Constellations: Lupus 'the Wolf'
Constellations: Phoenix 'the Mythological Firebird'
Constellations: Serpens 'the Serpent'
Constellations: Auriga 'the Charioteer'
Constellations: Grus 'the Crane'
Constellations: Canis Minor 'the Small Dog'
Constellations: Columba 'the Dove'
Constellations: Mensa 'the Table Mountain'
Constellations: Circinus 'the Geometer's Compass'
Constellations: Carina 'the Keel'
Constellations: Dorado 'the Dorado Fish'
Constellations: Horologium 'the Pendulum Clock'
Constellations: Sagitta 'the Arrow'
Constellations: Lacerta 'the Lizard'
Constellations: Musca 'the Fly'
Constellations: Telescopium 'the Telescope'
Constellations: Corona Australis 'the Southern Crown'
Constellations: Indus 'the Native American Indian'
Constellations: Tucana 'the Toucan'
Constellations: Sextans 'the Sextant'
Constellations: Pyxis 'the Mariner's Compass'
Constellations: Corvus 'the Crow'
Constellations: Reticulum 'the Reticle'
Constellations: Puppis 'the Stern'
Constellations: Crater 'the Cup'
Constellations: Vela 'the Sail'
Constellations: Hydrus 'the Water Snake'
Constellations: Lynx 'the Wildcat'
Constellations: Sculptor 'the Sculptor'
Constellations: Volans 'the Flying Fish'
Constellations: Octans 'the Octant'
Constellations: Chamaeleon 'the Chameleon'
Constellations: Triangulum Australe 'the Southern Triangle'
Constellations: Norma 'the Set Square'
Constellations: Equuleus 'the Foal'
Constellations: Microscopium 'the Microscope'
Constellations: Caelum 'the Sculptor's Chisel'
Spectral Classification System
Stellar Magnitudes
Messier Objects
Meteors, Meteorites and Meteor Showers
Constellations: Vulpecula 'the Fox'
Constellations: Canes Venatici 'the Hunting Dogs'
Constellations: Leo Minor 'the Lesser Lion'
Constellations: Lacerta 'the Lizard'
Nebulae - an Overview


Referenced Sites
APOD: M11 - The Wild Duck Cluster
Reflection Nebula IC 1287

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