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.
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.
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.
|Is a Zodiac Sign||No|
|Area||68.447 sq. deg.|
|Percentage of Night Sky||0.17%|
|Site Exoplanet Count||2|
|Meteor Shower Count||1|
|Nearest Star||HIP 58910|
|Nearest Star with Exoplanet(s)||HD 108147|
|Dimmest Star||HD 110506|
|Furthest Star||HIP 58278|
|Bright Star Count||33|
|Hipparcos Star Count||382|
|Main Star Count||4|
|Messier Deep Space Object Count||0|
|*Non-Messier Deep Space Object Count||0|
*Note: The number of Non-Messier Deep Space Object Count relates to how many are covered on this site not how many there are.
The map was generated using Night Vision, an awesome free application by Brian Simpson.
|Star||Distance (Lt. Yrs.)||Exoplanet Count||Declination||Right Ascension|
|HD 106906||300.33||1||-55d 58` 31.8||12h 17m 53.23|
|HD 108147||124.21||1||-64d 01` 19.0||12h 25m 46.51|
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.
|Star||Distance (Lt. Yrs.)||Declination||Right Ascension|
|AB Crucis||1941.45||-58d 09` 52.4||12h 17m 37.14|
|Acrux||321.98||-63d 05` 56.6||12h 26m 35.94|
|Acrux B||-63 d 05 ` 56.6||12h 26m 35.94|
|BG Crucis||1399.84||-59d 25` 26.1||12h 31m 40.34|
|BL Crucis||443.16||-58d 59` 30.4||12h 27m 28.88|
|CH Crucis||956.49||-59d 41` 08.9||12h 41m 56.60|
|Decrux||345.15||-58d 44` 56.0||12h 15m 08.76|
|DL Crucis||4796.52||-64d 24` 30.7||12h 14m 16.93|
|DS Crucis||3328.20||-60d 19` 47.2||12h 51m 17.98|
|Epsilon Crucis||229.85||-60d 24` 04.9||12h 21m 21.81|
|Eta Crucis||64.43||-64d 36` 49.1||12h 06m 52.85|
|Gacrux||88.56||-57d 06` 45.2||12h 31m 09.93|
|Iota Crucis||120.05||-60d 58` 52.2||12h 45m 37.92|
|Lambda Crucis||383.72||-59d 08` 48.0||12h 54m 39.22|
|Mimosa||278.53||-59d 41` 19.4||12h 47m 43.32|
|Mu Crucis||407.20||-57d 10` 07.1||12h 54m 36.92|
|Mu Crucis B||414.44||-57d 10` 40.4||12h 54m 35.66|
|R Crucis||1647.29||-61d 37` 44.8||12h 23m 37.70|
|S Crucis||2280.86||-58d 25` 50.2||12h 54m 22.01|
|T Crucis||4026.71||-62d 16` 53.9||12h 21m 21.14|
|Theta1 Crucis||234.99||-63d 18` 46.6||12h 03m 01.70|
|Theta2 Crucis||853.83||-63d 09` 56.6||12h 04m 19.24|
|W Crucis||-58 d 47` 00.7||12h 11m 59.17|
|WR 46||1331.28||-62d 03` 10.1||12h 05m 18.73|
|Zeta Crucis||357.64||-64d 00` 11.0||12h 18m 26.29|
|B||Blue-White 10,500 - 30,000k||110|
|F||Yellow-White 6,000 - 7,500k||78|
|K||Light Orange Star 3,700 - 5,200k||58|
|A||White 7,500 - 10,000k||55|
|G||Yellow 5,200 - 6,000k||43|
|M||Red Dwarf Star <3,700k||6|
|O||Blue Star >33,000k||4|
|Ib||Less Luminous Supergiant||21|
|Iab||Intermediate Luminous Supergiant||5|
|C||C-Type Carbon Star||2|
|S||S-Type Carbon Star||1|