Mensa (Pronounciation:Men-sar, Abbrev:Men, Latin:Mensae) is a constellation, one of 88 constellations that the night sky is divided into. The sky is not divided up equally between the constellations. Mensa takes up 153.484 sq. degrees of the night sky which equates to 0.37% of the night sky. The constellation gets its name as it name means The Mountain Table . It was not one of the original constellations that had been devised by Ptolemy, instead it was created by Abbé Nicolas Louis de Lacaille years later.
Mensa is not a member of the Zodiac group of twelve constellations that appear when the Sun sets. Mensa is a southern hemispheric constellation which means it can't be seen easily or at all from the northern hemisphere.
The number of stars that have been catalogued as part of the Hipparcos Star Catalogue from Mensa is 423. The number of stars that are of magnitude 6.0 or lower in the constellation is 16. 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 31292 which is roughly about 28.32 Light Years from the Earth. The nearest star to the Earth with an exoplanet is HD 39194 which is about 84.48 Light Years. The furthest star that can be located in the constellation is HIP 19732 which is located about 20385.21 Light Years away from the Sun.
The dimmest star that can be seen in Mensa with the naked eye is Xi Mensae. The dim star has an apparent magnitude of 5.84. 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.
There is no Greek Legend behind this constellation. It was created by Abbé Nicolas Louis de Lacaille to fill in the voids in the astronomical charts.There are no major meteor showers that radiate from within this constellation.
|Is a Zodiac Sign||No|
|Brightest Star||Alpha Mensae|
|Area||153.484 sq. deg.|
|Percentage of Night Sky||0.37%|
|Site Exoplanet Count||4|
|Meteor Shower Count||0|
|Nearest Star||HIP 31292|
|Nearest Star with Exoplanet(s)||HD 39194|
|Dimmest Star||Xi Mensae|
|Furthest Star||HIP 19732|
|Bright Star Count||16|
|Hipparcos Star Count||423|
|Main Star Count||4|
|Messier Deep Space Object Count||0|
|*Non-Messier Deep Space Object Count||0|
|Bordering / Neighbouring / Surrounding Constellations||Dorado|
*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 38283||124.97||1||-73d 41` 56.7||05h 37m 01.73|
|HD 39194||84.48||3||-70d 08` 47.7||05h 44m 32.45|
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|
|Alpha Mensae||33.26||-74d 45` 09.1||06h 10m 14.20|
|Alpha Mensae B||486.81||+27d 55` 39.2||08h 55m 39.69|
|Beta Mensae||793.58||-71d 18` 51.6||05h 02m 43.00|
|Delta Mensae||423.59||-80d 12` 51.1||04h 17m 59.18|
|Epsilon Mensae||466.61||-79d 05` 39.1||07h 25m 38.19|
|Eta Mensae||668.37||-74d 56` 13.2||04h 55m 11.14|
|Gamma Mensae||102.28||-76d 20` 30.0||05h 31m 52.66|
|Iota Mensae||853.83||-78d 49` 15.2||05h 35m 36.13|
|Kappa Mensae||285.11||-79d 21` 41.5||05h 50m 16.80|
|Lambda Mensae||452.38||-72d 42` 08.3||05h 47m 48.15|
|Mu Mensae||491.21||-70d 55` 52.0||04h 43m 03.95|
|Nu Mensae||169.79||-81d 34` 48.8||04h 20m 58.03|
|Pi Mensae||59.74||-80d 28` 18.0||05h 37m 08.79|
|R71||2489.80||-71d 20` 13.1||05h 02m 07.39|
|Theta Mensae||352.23||-79d 25` 12.7||06h 56m 34.48|
|TY Mensae||569.22||-81d 35` 08.0||05h 26m 49.79|
|TZ Mensae||366.06||-84d 47` 06.8||05h 30m 13.93|
|UX Mensae||331.80||-76d 14` 55.4||05h 30m 03.10|
|WX Mensae||1087.21||-73d 44` 28.9||05h 34m 44.78|
|Xi Mensae||368.96||-82d 28` 13.9||04h 58m 50.99|
|YY Mensae||942.67||-75d 16` 38.0||04h 58m 17.95|
|Zeta Mensae||413.91||-80d 48` 49.4||06h 40m 02.91|
|K||Light Orange Star 3,700 - 5,200k||120|
|F||Yellow-White 6,000 - 7,500k||101|
|G||Yellow 5,200 - 6,000k||91|
|A||White 7,500 - 10,000k||58|
|B||Blue-White 10,500 - 30,000k||22|
|M||Red Dwarf Star <3,700k||19|
|Iab||Intermediate Luminous Supergiant||2|
|R||R-Type Carbon Star||1|