Visible at latitudes between +30° and −90°. Best visible at 21:00 (9 p.m.) during the month of July.
Circinus is a small, faint constellation in the southern sky, first defined in 1756 by the French astronomer Nicolas-Louis de Lacaille. Its name is Latin for compass, referring to the drafting tool used for drawing circles (it should not be confused with Pyxis, a constellation that represents a mariner's compass which points north). Its brightest star is Alpha Circini, with an apparent magnitude of 3.19. Slightly variable, it is the brightest rapidly oscillating Ap star in the night sky. AX Circini is a Cepheid variable visible with the unaided eye, and BX Circini is a faint star thought to have been formed from the merger of two white dwarfs. Two sun-like stars have planetary systems: HD 134060 has two small planets, and HD 129445 has a Jupiter-like planet. Supernova SN 185 appeared in Circinus in 185 AD and was recorded by Chinese observers. Two novae have been observed more recently, in the 20th century.
The Milky Way runs through the constellation, featuring prominent objects such as the open cluster NGC 5823 and the planetary nebula NGC 5315. Circinus hosts a notable spiral galaxy, the Circinus Galaxy, discovered in 1977; it is the closest Seyfert galaxy to the Milky Way. The Alpha Circinids (ACI), a meteor shower also discovered in 1977, radiate from this constellation.
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cluster NGC 5823 and the planetary nebula NGC 5315. Circinus hosts a notable spiral galaxy, the Circinus Galaxy, discovered in 1977; it is the closest Seyfert...
The Circinus Galaxy (ESO 97-G13) is a Seyfert galaxy in the constellation of Circinus. It is located 4 degrees below the Galactic plane, and, at a distance...
According to traditional Chinese uranography, the modern constellation Circinus is located within the eastern quadrant of the sky, which is symbolized...
steel steamer Circinus of the "Green Star Line" dropped down to St. Helens yesterday and will start loading there Monday. The Circinus has been chartered...
the state. Kerrey works closely as an advisor to Elliott Broidy's firm Circinus, a paramilitary firm Broidy purchased in 2014 which has large contracts...
one foot of the Great Rhea, a constellation encompassing Centaurus and Circinus along with the two bright stars. The Great Rhea was a constellation of...
This is the list of notable stars in the constellation Circinus, sorted by decreasing brightness. List of stars by constellation ESA (1997). "The Hipparcos...
Alpha Centauri, between the constellations Circinus and Centaurus, centered at RA 14h 43m Dec −62° 30′, in Circinus. This "guest star" was observed by Chinese...
Pyxis Nautica, its name is Latin for a mariner's compass (contrasting with Circinus, which represents a draftsman's compasses). Pyxis was introduced by Nicolas-Louis...
Taurus Gemini Orion Monoceros Canis Major Puppis Vela Carina Crux Centaurus Circinus Norma Ara Scorpius Ophiuchus Wikimedia Commons has media related to Galactic...
Coma Berenices (near the Milky Way galactic north pole) Virgo Centaurus Circinus (in the galactic plane) Triangulum Australe Pavo Indus Grus Sculptor (near...
the north, Circinus to the west, Apus to the south and Ara to the east. It lies near the Pointers (Alpha and Beta Centauri), with only Circinus in between...
the centaur's legs. Additionally, what is now the minor constellation Circinus was treated as undefined stars under the centaur's front hooves. According...
Crux to the north, Carina to the west, Chamaeleon to the south, Apus and Circinus to the east, and Centaurus to the northeast. Covering 138 square degrees...
attempted to expand Circinus assistance with Tunisia through Tunisians Eymen Errais and Fadhel Abdelkefi and with Cyprus allowing Circinus to create a "misatrributed...
of the central black hole. Here are some examples of Seyfert galaxies: Circinus Galaxy, which has rings of gas ejected from its center Centaurus A or NGC...
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