Circinus

(ser -să-nŭs) (Compasses) A small constellation in the southern hemisphere near Centaurus, lying in the Milky Way. The brightest star is of 3rd magnitude. Circinus X-1 is an X-ray burst source. Abbrev.: Cir; genitive form: Circini; approx. position: RA 15h, dec –60°; area: 93 sq deg.

Collins Dictionary of Astronomy © Market House Books Ltd, 2006

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Circinus

(Compasses), a constellation of the southern hemisphere. Its brightest star has a visual magnitude of 3.2. Circinus is not visible in the USSR. (SeeSTELLAR SKY.)

Circinus

[′sərs·ən·əs]

(astronomy)

A constellation, right ascension 15 hours, declination 60°S. Abbreviated Cir. Also known as Compasses.

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References in periodicals archive ?

(https://www.circinus-llc.com) Circinus  provides security intelligence to the U.S.

GOP Donor Elliott Broidy Faces Federal Investigation

Using the MIDI instrument at the Very Large Telescope Interferometer of the European Southern Observatory (ESO) in the Atacama Desert of Chile, the research team obtained an unprecedented clear view of the warm dust in the nucleus of the Circinus Galaxy.

Scientist find dense disk and torus funnel at Circinus galaxy's center

Circinus, in contrast, seems to flash only once per rotation.

A shower of gamma-ray findings

The team discovered the age of this record-breaking pair, named Circinus X-1, by using data from NASA's Chandra X-ray Observatory, which revealed faint remnants of the supernova explosion that created the neutron star.

'Youngest' neutron-star binary found

Iniial results from KAT-7 of the X-ray binary Circinus X-1 will be presented.

Astronomical colloquia

LOCATED WITHIN the southern Milky Way, and somewhat overshadowed by neighboring Centaurus, is tiny Circinus, fourth-smallest of the 88 constellations.

Southern hemisphere's sky

Heinz and his colleagues quickly mounted a series of follow-up observations with the space-based Chandra and XMM-Newton telescopes to discover four bright rings of X-rays, like ripples in a cosmic pond, all around the neutron star at the heart of Circinus X-1.

Neutron Star's Echoes Give Astronomers New Measuring Stick

The remnant, called RCW 86, is located about 8200 light-years away towards the constellation of Circinus (the Drawing Compass).

Mystery of Milky Way's particle accelerators solved

The shape of the Circinus constellation resembles a long, acute-angled triangle with Alpha Circini pointing SW Beta and Gamma Circini completes the shape of the image, approximately 7 degrees NW.

Circinus a handy tool

West of Triangulum Australe is Circinus. It may be the fourth-smallest constellation, with an area of just 93 square degrees, but its proximity to Alpha Centauri and its distinctive shape make Circinus a star figure that you can find with relative ease.