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The constellations Grus, Pavo, Phoenix and Tucana are collectively known as the "Southern Birds". The constellation's brightest star, Alpha Gruis, is also known as Alnair and appears as a 1.7-magnitude blue-white star. Beta Gruis is a red giant variable star with a minimum magnitude of 2.3 and a maximum magnitude of 2.0.
The official constellation boundaries, as set by Belgian astronomer Eugène Delporte in 1930, [b] are defined by a polygon of six segments (illustrated in infobox). In the equatorial coordinate system , the right ascension coordinates of these borders lie between 13 h 49.5 m and 18 h 27.3 m , while the declination coordinates are between −67. ...
Tucana (The Toucan) is a constellation in the southern sky, named after the toucan, a South American bird.It is one of twelve constellations conceived in the late sixteenth century by Petrus Plancius from the observations of Pieter Dirkszoon Keyser and Frederick de Houtman.
For species found in the 50 states, Puerto Rico, and the U.S. Virgin Islands, the taxonomic treatment (designation and sequence of orders, families and species) and nomenclature (common and scientific names) used in the list are those of the AOS, the recognized scientific authority on the taxonomy and nomenclature of North and Middle American birds.
Native birds of the West Coast of the United States (33 P) R. Native birds of the Rocky Mountains (14 P) S. Birds of the Sierra Nevada (United States) (21 P)
The constellation stretches from roughly −39° to −57° declination, and from 23.5h to 2.5h of right ascension. The constellations Phoenix, Grus, Pavo and Tucana, are known as the Southern Birds. The brightest star, Alpha Phoenicis, is named Ankaa, an Arabic word meaning 'the Phoenix'. It is an orange giant of apparent magnitude 2.4.
Pavo is a constellation in the southern sky whose name is Latin for ' peacock '.Pavo first appeared on a 35-cm (14 in) diameter celestial globe published in 1598 in Amsterdam by Petrus Plancius and Jodocus Hondius and was depicted in Johann Bayer's star atlas Uranometria of 1603, and was likely conceived by Plancius from the observations of Pieter Dirkszoon Keyser and Frederick de Houtman.
The constellation Aquila as it can be seen by the naked eye. Aquila was one of the 48 constellations described by the second-century astronomer Ptolemy. It had been earlier mentioned by Eudoxus in the fourth century BC and Aratus in the third century BC. [3] It is now one of the 88 constellations defined by the International Astronomical Union.