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Crux Constellation

Crux (Pronounciation:Krucks, Abbrev:Cru, Latin:Crucis) is a constellation, one of 88 constellations that the night sky is divided into. The sky is not divided up equally between the constellations. Crux takes up 68.447 sq. degrees of the night sky which equates to 0.17% of the night sky. The constellation gets its name as it name means The Cross . It was not one of the original constellations that had been devised by Ptolemy, instead it was created by Johann Bayer years later.

Crux is not a member of the Zodiac group of twelve constellations that appear when the Sun sets. Crux is a southern hemispheric constellation which means it can't be seen easily or at all from the northern hemisphere.

The brightest star in Crux is Acrux. There are 2 Extrasolar Planets (Exoplanets) in this constellation that are detailed on this site. The current largest star so far identified in the constellation of Crux is Gacrux.

Crux Star and Deep Space Object Count

The number of stars that have been catalogued as part of the Hipparcos Star Catalogue from Crux is 382. The number of stars that are of magnitude 6.0 or lower in the constellation is 33. The number of stars in the constellation that make up the outline is 4.

There are no deep space objects that were identified by Charles Messier in this constellation. There are no non-Messier deep space objects in this constellation that are covered at present on this site.

Stars of Interest

The nearest star to Earth is HIP 58910 which is roughly about 17.99 Light Years from the Earth. The nearest star to the Earth with an exoplanet is HD 108147 which is about 124.21 Light Years. The furthest star that can be located in the constellation is HIP 58278 which is located about 108721.1 Light Years away from the Sun. The furthest figure is derived from either the 1997 or 2007 Hipparcos star catalogue parallax figure and it has been known to produce distances that are wrong.

The dimmest star that can be seen in Crux with the naked eye is HD 110506. The dim star has an apparent magnitude of 5.99. The dimmest star that a person is able to see with their naked eye is 6.0 magnitude based on the table in the reference. Ref: University of Michigan

The caveat of these stars are that they are catalogued on this site. If you know of a star that is nearer or further then do let me know in the comments and I'll add it to the site. The stars mentioned are from the Hipparcos catalogue or have been added because of their special status.

Johann Bayer created the constellation from Centaurus.

There are no major meteor showers that radiate from within this constellation.

Crux Facts

Is a Zodiac Sign No
Largest StarGacrux
Brightest StarAcrux
Area68.447 sq. deg.
Percentage of Night Sky0.17%
Size Position88th
Hemisphere Southern
Site Exoplanet Count2
Meteor Shower Count1
Nearest StarHIP 58910
Nearest Star with Exoplanet(s)HD 108147
Dimmest StarHD 110506
Furthest StarHIP 58278
Bright Star Count33
Hipparcos Star Count382
Main Star Count4
Messier Deep Space Object Count0
*Non-Messier Deep Space Object Count0

*Note: The number of Non-Messier Deep Space Object Count relates to how many are covered on this site not how many there are.

Crux Constellation Map

Crux Constellation Star Map

The map was generated using Night Vision, an awesome free application by Brian Simpson.

List of Stars with Exoplanets in Crux

StarDistance (Lt. Yrs.)Exoplanet CountDeclinationRight Ascension
HD 106906300.331-55d 58` 31.812h 17m 53.23
HD 108147124.211-64d 01` 19.012h 25m 46.51

List of Named Stars in Crux without Extrasolar Planets

As there's so many stars in the cosmos, not all the stars are listed here. The site has lots of stars not listed so if your star isn't listed and you know the Henry Draper or Hipparcos ID, type https://www.universeguide.com/star/ then followed by the HIPNNNNNN or HDNNNN where NNNNN is the number part of the name. The stars that I do list have either a traditional name, a bayer or other classification name.

StarDistance (Lt. Yrs.)DeclinationRight Ascension
AB Crucis1941.45-58d 09` 52.412h 17m 37.14
Acrux321.98-63d 05` 56.612h 26m 35.94
Acrux B-63 d 05 ` 56.612h 26m 35.94
BG Crucis1399.84-59d 25` 26.112h 31m 40.34
BL Crucis443.16-58d 59` 30.412h 27m 28.88
CH Crucis956.49-59d 41` 08.912h 41m 56.60
Decrux345.15-58d 44` 56.012h 15m 08.76
DL Crucis4796.52-64d 24` 30.712h 14m 16.93
DS Crucis3328.20-60d 19` 47.212h 51m 17.98
Epsilon Crucis229.85-60d 24` 04.912h 21m 21.81
Eta Crucis64.43-64d 36` 49.112h 06m 52.85
Gacrux88.56-57d 06` 45.212h 31m 09.93
Iota Crucis120.05-60d 58` 52.212h 45m 37.92
Lambda Crucis383.72-59d 08` 48.012h 54m 39.22
Mimosa278.53-59d 41` 19.412h 47m 43.32
Mu Crucis407.20-57d 10` 07.112h 54m 36.92
Mu Crucis B414.44-57d 10` 40.412h 54m 35.66
R Crucis1647.29-61d 37` 44.812h 23m 37.70
S Crucis2280.86-58d 25` 50.212h 54m 22.01
T Crucis4026.71-62d 16` 53.912h 21m 21.14
Theta1 Crucis234.99-63d 18` 46.612h 03m 01.70
Theta2 Crucis853.83-63d 09` 56.612h 04m 19.24
W Crucis-58 d 47` 00.712h 11m 59.17
WR 461331.28-62d 03` 10.112h 05m 18.73
Zeta Crucis357.64-64d 00` 11.012h 18m 26.29

Crux Constellation's Star Breakdown

Type Breakdown

BBlue-White 10,500 - 30,000k110
FYellow-White 6,000 - 7,500k78
KLight Orange Star 3,700 - 5,200k58
AWhite 7,500 - 10,000k55
GYellow 5,200 - 6,000k43
MRed Dwarf Star <3,700k6
OBlue Star >33,000k4

Size Breakdown

VMain Sequence143
IIINormal Giant92
IIBright Giant23
IbLess Luminous Supergiant21
IaLuminous Supergiant6
IabIntermediate Luminous Supergiant5
WWolf-Rayet Star2

Breakdown of Carbon Stars by Type

CC-Type Carbon Star2
SS-Type Carbon Star1

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