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Mensa Constellation

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 brightest star in Mensa is Alpha Mensae. There are 4 Extrasolar Planets (Exoplanets) in this constellation that are detailed on this site.

Mensa Star and Deep Space Object Count

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.

Stars of Interest

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.

Mensa Facts

Is a Zodiac Sign No
Brightest StarAlpha Mensae
Area153.484 sq. deg.
Percentage of Night Sky0.37%
Size Position75th
Hemisphere Southern
Site Exoplanet Count4
Meteor Shower Count0
Nearest StarHIP 31292
Nearest Star with Exoplanet(s)HD 39194
Dimmest StarXi Mensae
Furthest StarHIP 19732
Bright Star Count16
Hipparcos Star Count423
Main Star Count4
Messier Deep Space Object Count0
*Non-Messier Deep Space Object Count0
Bordering / Neighbouring / Surrounding ConstellationsDorado

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

Mensa Constellation Map

Mensa Constellation Star Map

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

List of Stars with Exoplanets in Mensa

StarDistance (Lt. Yrs.)Exoplanet CountDeclinationRight Ascension
HD 38283124.971-73d 41` 56.705h 37m 01.73
HD 3919484.483-70d 08` 47.705h 44m 32.45

List of Named Stars in Mensa 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
Alpha Mensae33.26-74d 45` 09.106h 10m 14.20
Alpha Mensae B486.81+27d 55` 39.208h 55m 39.69
Beta Mensae793.58-71d 18` 51.605h 02m 43.00
Delta Mensae423.59-80d 12` 51.104h 17m 59.18
Epsilon Mensae466.61-79d 05` 39.107h 25m 38.19
Eta Mensae668.37-74d 56` 13.204h 55m 11.14
Gamma Mensae102.28-76d 20` 30.005h 31m 52.66
Iota Mensae853.83-78d 49` 15.205h 35m 36.13
Kappa Mensae285.11-79d 21` 41.505h 50m 16.80
Lambda Mensae452.38-72d 42` 08.305h 47m 48.15
Mu Mensae491.21-70d 55` 52.004h 43m 03.95
Nu Mensae169.79-81d 34` 48.804h 20m 58.03
Pi Mensae59.74-80d 28` 18.005h 37m 08.79
R712489.80-71d 20` 13.105h 02m 07.39
Theta Mensae352.23-79d 25` 12.706h 56m 34.48
TY Mensae569.22-81d 35` 08.005h 26m 49.79
TZ Mensae366.06-84d 47` 06.805h 30m 13.93
UX Mensae331.80-76d 14` 55.405h 30m 03.10
WX Mensae1087.21-73d 44` 28.905h 34m 44.78
Xi Mensae368.96-82d 28` 13.904h 58m 50.99
YY Mensae942.67-75d 16` 38.004h 58m 17.95
Zeta Mensae413.91-80d 48` 49.406h 40m 02.91

Mensa Constellation's Star Breakdown

Type Breakdown

KLight Orange Star 3,700 - 5,200k120
FYellow-White 6,000 - 7,500k101
GYellow 5,200 - 6,000k91
AWhite 7,500 - 10,000k58
BBlue-White 10,500 - 30,000k22
MRed Dwarf Star <3,700k19

Size Breakdown

IIINormal Giant165
VMain Sequence150
IaLuminous Supergiant3
IabIntermediate Luminous Supergiant2
WWolf-Rayet Star1
IIBright Giant1

Breakdown of Carbon Stars by Type

RR-Type Carbon Star1

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