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Ara (constellation)

Index Ara (constellation)

Ara (Latin: "The Altar") is a southern constellation situated between Scorpius and Triangulum Australe. [1]

91 relations: Almagest, Alpha Arae, Altar, Apparent magnitude, Apus, Ara in Chinese astronomy, Aratus, Astrophotography, Azure Dragon, B-type main-sequence star, Bayer designation, Be star, Beta Arae, Bradley Schaefer, Constellation, Constellation family, Corona Australis, Crater-class cargo ship, Declination, Delta Arae, Effective temperature, Equatorial coordinate system, Eta Arae, Eugène Joseph Delporte, Exoplanet, Full moon, Gaius Julius Hyginus, Galactic plane, Gamma Arae, Gliese 674, Gliese 676, Globular cluster, Greek mythology, HarperCollins, HD 152079, HD 154672, HD 154857, HD 156411, Hot Jupiter, Hypergiant, IC 4651, International Astronomical Union, Johann Bayer, List of largest stars, Milky Way, Mortar and pestle, Mu Arae, Nebula, NGC 6188, NGC 6193, ..., NGC 6200, NGC 6204, NGC 6208, NGC 6221, NGC 6250, NGC 6326, NGC 6352, NGC 6362, NGC 6397, Norma (constellation), Open cluster, Pavo (constellation), Popular Astronomy (US magazine), Ptolemy, Right ascension, Scorpius, Sky & Telescope, Solar System, South Pole, Southern celestial hemisphere, Spiral galaxy, Stellar atmosphere, Stellar wind, Stingray Nebula, Super star cluster, Telescopium, Titan (mythology), Tortoise, Triangulum Australe, United States Navy, USS Ara (AK-136), Virginia, Westerlund 1, Westerlund 1-26, Willem Blaeu, Woodcut, Zeta Arae, 22nd parallel north, 25th parallel north, 44th parallel north, 88 modern constellations. Expand index (41 more) »


The Almagest is a 2nd-century Greek-language mathematical and astronomical treatise on the apparent motions of the stars and planetary paths, written by Claudius Ptolemy. One of the most influential scientific texts of all time, its geocentric model was accepted for more than 1200 years from its origin in Hellenistic Alexandria, in the medieval Byzantine and Islamic worlds, and in Western Europe through the Middle Ages and early Renaissance until Copernicus.

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Alpha Arae

Alpha Arae, Latinized from α Arae, is the second brightest star in the southern constellation of Ara.

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An altar is any structure upon which offerings such as sacrifices are made for religious purposes, and by extension the 'Holy table' of post-reformation Anglican churches.

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Apparent magnitude

The apparent magnitude of a celestial object is a number that is a measure of its brightness as seen by an observer on Earth.

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Apus is a small constellation in the southern sky.

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Ara in Chinese astronomy

According to traditional Chinese uranography, the modern constellation Ara is located within the eastern quadrant of the sky, which is symbolized as the Azure Dragon of the East (東方青龍, Dōng Fāng Qīng Lóng).

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Aratus (Ἄρατος ὁ Σολεύς; ca. 315 BC/310 BC240) was a Greek didactic poet.

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Astrophotography is a specialized type of photography for recording photos of astronomical objects, celestial events, and areas of the night sky.

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Azure Dragon

The Azure Dragon (青龍 Qīnglóng), also known as Bluegreen Dragon, Green Dragon, or also called the Blue Dragon (蒼龍 Cānglóng), is one of the Dragon Gods who represent the mount or chthonic forces of the Five Forms of the Highest Deity (五方上帝 Wǔfāng Shàngdì).

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B-type main-sequence star

A B-type main-sequence star (B V) is a main-sequence (hydrogen-burning) star of spectral type B and luminosity class V. These stars have from 2 to 16 times the mass of the Sun and surface temperatures between 10,000 and 30,000 K. B-type stars are extremely luminous and blue.

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Bayer designation

A Bayer designation is a stellar designation in which a specific star is identified by a Greek letter, followed by the genitive form of its parent constellation's Latin name.

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Be star

Be Stars are a heterogeneous set of stars with B spectral types and emission lines.

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Beta Arae

Beta Arae (β Ara, β Arae) is the brightest star in the constellation Ara, with an apparent visual magnitude of 2.8.

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Bradley Schaefer

Bradley Elliott Schaefer is a professor of astronomy and astrophysics at Louisiana State University.

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A constellation is a group of stars that are considered to form imaginary outlines or meaningful patterns on the celestial sphere, typically representing animals, mythological people or gods, mythological creatures, or manufactured devices.

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Constellation family

Constellation families are collections of constellations sharing some defining characteristic, such as proximity on the celestial sphere, common historical origin, or common mythological theme.

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Corona Australis

Corona Australis is a constellation in the Southern Celestial Hemisphere.

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Crater-class cargo ship

Crater-class cargo ship is a category of freighter that was constructed for use by the United States Navy during World War II under Maritime Commission EC2-S-C1 type.

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In astronomy, declination (abbreviated dec; symbol δ) is one of the two angles that locate a point on the celestial sphere in the equatorial coordinate system, the other being hour angle.

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Delta Arae

Delta Arae, Latinized from δ Arae, is the Bayer designation for a double star in the southern constellation Ara.

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Effective temperature

The effective temperature of a body such as a star or planet is the temperature of a black body that would emit the same total amount of electromagnetic radiation.

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Equatorial coordinate system

The equatorial coordinate system is a celestial coordinate system widely used to specify the positions of celestial objects.

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Eta Arae

Eta Arae, Latinized from η Arae, is the Bayer designation for a single star in the southern constellation of Ara.

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Eugène Joseph Delporte

Eugène Joseph Delporte (10 January 1882 – 19 October 1955) was a Belgian astronomer born in Genappe.

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An exoplanet or extrasolar planet is a planet outside our solar system.

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Full moon

The full moon is the lunar phase when the Moon appears fully illuminated from Earth's perspective.

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Gaius Julius Hyginus

Gaius Julius Hyginus (64 BC – AD 17) was a Latin author, a pupil of the famous Cornelius Alexander Polyhistor, and a freedman of Caesar Augustus.

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Galactic plane

The galactic plane is the plane on which the majority of a disk-shaped galaxy's mass lies.

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Gamma Arae

Gamma Arae (γ Ara, γ Arae) is a star in the southern constellation of Ara.

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Gliese 674

Gliese 674 (Gliese–Jahreiß 674) is a pre-main-sequence red dwarf approximately 15 light years away in the southern constellation of Ara.

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Gliese 676

Gliese 676 is a 10th-magnitude wide binary system of red dwarfs that has an estimated minimum separation of 800 AU with an orbital period of greater than 20,000 years.

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Globular cluster

A globular cluster is a spherical collection of stars that orbits a galactic core as a satellite.

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Greek mythology

Greek mythology is the body of myths and teachings that belong to the ancient Greeks, concerning their gods and heroes, the nature of the world, and the origins and significance of their own cult and ritual practices.

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HarperCollins Publishers L.L.C. is one of the world's largest publishing companies and is one of the Big Five English-language publishing companies, alongside Hachette, Macmillan, Penguin Random House, and Simon & Schuster.

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HD 152079

HD 152079 is a star in the constellation Ara and has one planet.

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HD 154672

HD 154672 is a yellow subgiant (spectral type G3 IV).

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HD 154857

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HD 156411

HD 156411 is a 7th magnitude G-type main sequence star located approximately 179 light years away in the constellation Ara.

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Hot Jupiter

Hot Jupiters are a class of gas giant exoplanets that are inferred to be physically similar to Jupiter but that have very short orbital period (P The close proximity to their stars and high surface-atmosphere temperatures resulted in the moniker "hot Jupiters". Hot Jupiters are the easiest extrasolar planets to detect via the radial-velocity method, because the oscillations they induce in their parent stars' motion are relatively large and rapid compared to those of other known types of planets. One of the best-known hot Jupiters is 51 Pegasi b. Discovered in 1995, it was the first extrasolar planet found orbiting a Sun-like star. 51 Pegasi b has an orbital period of about 4 days.

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A hypergiant (luminosity class 0 or Ia+) is among the very rare kinds of stars that typically show tremendous luminosities and very high rates of mass loss by stellar winds.

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IC 4651

IC 4651 is an open cluster of stars located about 2,900 light years distant in the constellation Ara.

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International Astronomical Union

The International Astronomical Union (IAU; Union astronomique internationale, UAI) is an international association of professional astronomers, at the PhD level and beyond, active in professional research and education in astronomy.

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Johann Bayer

Johann Bayer (1572 – 7 March 1625) was a German lawyer and uranographer (celestial cartographer).

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List of largest stars

Below is an ordered list of the largest stars currently known by radius.

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Milky Way

The Milky Way is the galaxy that contains our Solar System.

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Mortar and pestle

A mortar and pestle is a kitchen implement used since ancient times to prepare ingredients or substances by crushing and grinding them into a fine paste or powder.

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Mu Arae

Mu Arae (μ Arae, abbreviated Mu Ara, μ Ara), often designated HD 160691, also named Cervantes, is a main sequence G-type star approximately 50 light-years away from the Sun in the constellation of Ara.

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A nebula (Latin for "cloud" or "fog"; pl. nebulae, nebulæ, or nebulas) is an interstellar cloud of dust, hydrogen, helium and other ionized gases.

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NGC 6188

NGC 6188 is an emission nebula located about 4,000 light years away in the constellation Ara.

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NGC 6193

NGC 6193 is open cluster containing 27 stars in the constellation Ara, visible to the unaided eye.

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NGC 6200

NGC 6200 is an open cluster in the constellation Ara, lying close to the galactic equator.

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NGC 6204

NGC 6204 is an open cluster in the constellation Ara, lying close to the galactic equator.

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NGC 6208

NGC 6208 is an open cluster in the southern constellation of Ara.

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NGC 6221

NGC 6221 (also known as PGC 59175) is a barred spiral galaxy located in the constellation Ara.

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NGC 6250

NGC 6250 is a young open cluster of stars in the southern constellation of Ara.

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NGC 6326

NGC 6326 is a complex and irregularly structured planetary nebula located in the constellation Ara.

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NGC 6352

NGC 6352 (also known as Caldwell 81) is a globular cluster in the southern constellation Ara.

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NGC 6362

NGC 6362 is a globular cluster in the constellation Ara, lying close to Apus in the southern sky.

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NGC 6397

NGC 6397, also known as Caldwell 86, is a globular cluster in the constellation Ara.

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Norma (constellation)

Norma is a small constellation in the Southern Celestial Hemisphere between Ara and Lupus, one of twelve drawn up in the 18th century by French astronomer Nicolas-Louis de Lacaille and one of several depicting scientific instruments.

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Open cluster

An open cluster is a group of up to a few thousand stars that were formed from the same giant molecular cloud and have roughly the same age.

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Pavo (constellation)

Pavo is a constellation in the southern sky with the Latin name for peacock.

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Popular Astronomy (US magazine)

Popular Astronomy is an American magazine published by John August Media, LLC and hosted at TechnicaCuriosa.com for amateur astronomers.

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Claudius Ptolemy (Κλαύδιος Πτολεμαῖος, Klaúdios Ptolemaîos; Claudius Ptolemaeus) was a Greco-Roman mathematician, astronomer, geographer, astrologer, and poet of a single epigram in the Greek Anthology.

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Right ascension

Right ascension (abbreviated RA; symbol) is the angular distance measured only eastward along the celestial equator from the Sun at the March equinox to the (hour circle of the) point above the earth in question.

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Scorpius is one of the constellations of the zodiac.

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Sky & Telescope

Sky & Telescope (S&T) is a monthly American magazine covering all aspects of amateur astronomy, including the following.

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Solar System

The Solar SystemCapitalization of the name varies.

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South Pole

The South Pole, also known as the Geographic South Pole or Terrestrial South Pole, is one of the two points where the Earth's axis of rotation intersects its surface.

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Southern celestial hemisphere

The Southern Celestial Hemisphere, or the Southern Sky, is the southern half of the celestial sphere, which appears to rotate around a polar axis due to Earth's rotation.

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Spiral galaxy

Spiral galaxies form a class of galaxy originally described by Edwin Hubble in his 1936 work The Realm of the Nebulae(pp. 124–151) and, as such, form part of the Hubble sequence.

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Stellar atmosphere

The stellar atmosphere is the outer region of the volume of a star, lying above the stellar core, radiation zone and convection zone.

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Stellar wind

A stellar wind is a flow of gas ejected from the upper atmosphere of a star.

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Stingray Nebula

The Stingray Nebula (Hen 3-1357) is the youngest known planetary nebula (PN).

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Super star cluster

A super star cluster (SSC) is a very massive young open cluster that is thought to be the precursor of a globular cluster.

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Telescopium is a minor constellation in the southern celestial hemisphere, one of twelve named in the 18th century by French astronomer Nicolas-Louis de Lacaille and one of several depicting scientific instruments.

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Titan (mythology)

In Greek mythology, the Titans (Greek: Τιτάν, Titán, Τiτᾶνες, Titânes) and Titanesses (or Titanides; Greek: Τιτανίς, Titanís, Τιτανίδες, Titanídes) were members of the second generation of divine beings, descending from the primordial deities and preceding the Olympians.

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Tortoises are a family, Testudinidae. Testudinidae is a Family under the order Testudines and suborder Cryptodira.

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Triangulum Australe

Triangulum Australe is a small constellation in the far Southern Celestial Hemisphere.

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United States Navy

The United States Navy (USN) is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States.

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USS Ara (AK-136)

USS Ara (AK-136) was a commissioned by the US Navy for service in World War II.

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Virginia (officially the Commonwealth of Virginia) is a state in the Southeastern and Mid-Atlantic regions of the United States located between the Atlantic Coast and the Appalachian Mountains.

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Westerlund 1

Westerlund 1 (abbreviated Wd1, sometimes called Ara Cluster) is a compact young super star cluster in the Milky Way galaxy, about 3.5–5 kpc away from Earth.

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Westerlund 1-26

Westerlund 1-26 or Wd 1-26 is a red supergiant or hypergiant within the outskirts of the Westerlund 1 super star cluster.

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Willem Blaeu

Willem Janszoon Blaeu (157121 October 1638), also abbreviated to Willem Jansz.

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Woodcut is a relief printing technique in printmaking.

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Zeta Arae

Zeta Arae (ζ Ara, ζ Arae) is a star in the southern constellation Ara.

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22nd parallel north

The 22nd parallel north is a circle of latitude that is 22 degrees north of the Earth's equatorial plane.

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25th parallel north

The 25th parallel north is a circle of latitude that is 25 degrees north of the Earth's equatorial plane.

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44th parallel north

The 44th parallel north is a circle of latitude that is 44 degrees north of the Earth's equatorial plane.

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88 modern constellations

In modern astronomy, the sky (celestial sphere) is divided into 88 regions called constellations, generally based on the asterisms (which are also called "constellations") of Greek and Roman mythology.

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Redirects here:

Ara constellation, The Altar (constellation).


[1] https://en.wikipedia.org/wiki/Ara_(constellation)

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