A

David

Darling

Grus

Grus constellation

Grus. © 2003 Torsten Bronger..


Grus (abbreviation: Gru), the Crane, is a small southern constellation. It lies south of Pisces Austrinus between R.A. 21h 30m and 23h 25m and Dec. -36° and -56°. See below for details of the constellation's brightest stars.

 


Grus Quartet

 

Grus Quartet

 

The Grus Quartet (NGC 7552, NGC 7582, NGC 7590, and NGC 7599) is a group of four large spiral galaxies, which are physically very close together and strongly interacting (see galaxy interaction). The high starburst activity of two of the members, NGC 7552 and NGC 7582, is also thought to arise from tidal galaxy-galaxy interactions and subsequent formation of a bar in the disk. Several tidal tails are visible extending from NGC 7582, one pointing toward the neighbors in the east and the other toward NGC 7552, which lies at a projected distance of approximately 30' to the northwest.

 


Stars brighter than magnitude 4.0
Star Visual
mag.
Abs.
mag.
Spectral
type
Distance
(lt-yr)
R.A. (h m s) Dec. (° ' ")
Alpha (Alnair) 1.73 -0.74 B7IV 101 22 08 14 -46 57 40
Beta 2.07v -1.52 M5III 170 22 42 40 -46 53 05
Gamma (Al Dhanab) 3.00 -0.97 B8III 203 21 53 56 -37 21 54
Epsilon 3.49 0.49 A3V 130 22 48 33 -51 19 01
Iota 3.88 0.11 K0III 185 23 10 21 -45 14 48
Delta-1 3.97 -0.87 G6III 296 22 29 16 -43 29 45


Constellations
Andromeda | Antlia | Apus | Aquarius | Aquila | Ara | Aries | Auriga | Bootes | Caelum | Camelopardalis | Cancer | Canes Venatici | Canis Major | Canis Minor | Capricornus | Carina | Cassiopeia | Centaurus | Cepheus | Cetus | Chamaeleon | Circinus | Columba | Coma Berenices | Corona Austrina | Corona Borealis | Corvus | Crater | Crux | Cygnus | Delphinus | Dorado | Draco | Equuleus | Eridanus | Fornax | Gemini | Grus | Hercules | Horologium | Hydra | Hydrus | Indus | Lacerta | Leo | Leo Minor | Lepus | Libra | Lupus | Lynx | Lyra | Mensa | Microscopium | Monoceros | 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