Octans (Pronounciation:Oct-ans, Abbrev:Oct, Latin:Octantis) is a constellation, one of 88 constellations that the night sky is divided into. The sky is not divided up equally between the constellations. Octans takes up 291.045 sq. degrees of the night sky which equates to 0.71% of the night sky. The constellation gets its name as it name means The Octant . 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.
Octans is not a member of the Zodiac group of twelve constellations that appear when the Sun sets. Octans 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 Octans is 794. The number of stars that are of magnitude 6.0 or lower in the constellation is 35. The number of stars in the constellation that make up the outline is 5.
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 113229 which is roughly about 28.1 Light Years from the Earth. The nearest star to the Earth with an exoplanet is HD 142022 which is about 111.97 Light Years. The furthest star that can be located in the constellation is HIP 86836 which is located about 326163.3 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 Octans with the naked eye is Mu1 Octantis. 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.
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.
Octans is the southern most constellation and covers the south pole area when you look directly up. Unlike Polaris which is directly overhead in the North Pole, there is not an equivalent. The star closest to the South Pole in terms of overhead has the name Polaris Australis.There are no major meteor showers that radiate from within this constellation.
|Is a Zodiac Sign||No|
|Brightest Star||Nu Octantis|
|Area||291.045 sq. deg.|
|Percentage of Night Sky||0.71%|
|Site Exoplanet Count||2|
|Meteor Shower Count||1|
|Nearest Star||HIP 113229|
|Nearest Star with Exoplanet(s)||HD 142022|
|Dimmest Star||Mu1 Octantis|
|Furthest Star||HIP 86836|
|Bright Star Count||35|
|Hipparcos Star Count||794|
|Main Star Count||5|
|Messier Deep Space Object Count||0|
|*Non-Messier Deep Space Object Count||0|
|Bordering / Neighbouring / Surrounding Constellations||Indus|
*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 142022||111.97||1||-84d 13` 53.5||16h 10m 16.98|
|HD 212301||179.21||1||-77d 43` 03.7||22h 27m 30.71|
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 Octantis||142.00||-77d 01` 22.3||21h 04m 43.03|
|B Octantis||335.21||-88d 49` 05.5||22h 45m 29.59|
|Beta Octantis||149.27||-81d 22` 53.8||22h 46m 03.72|
|BP Octantis||212.21||-88d 07` 58.1||15h 28m 20.68|
|BQ Oct||1591.04||-89d 46` 18.1||14h 35m 30.80|
|CF Octantis||683.78||-80d 08` 01.1||20h 49m 37.26|
|Chi Octantis||256.82||-87d 36` 19.9||18h 54m 47.65|
|CW Octantis||627.24||-86d 21` 51.5||17h 00m 58.44|
|Delta Octantis||298.96||-83d 40` 04.3||14h 26m 55.74|
|Epsilon Octantis||290.70||-80d 26` 22.7||22h 20m 01.48|
|Eta Octantis||344.05||-84d 35` 37.9||10h 59m 14.16|
|Gamma1 Octantis||265.17||-82d 01` 07.6||23h 52m 06.69|
|Gamma2 Octantis||305.11||-82d 10` 11.1||23h 57m 32.99|
|Gamma3 Octantis||254.62||-82d 13` 26.4||00h 10m 02.27|
|Iota Octantis||351.85||-85d 07` 24.3||12h 54m 58.35|
|Kappa Octantis||273.17||-85d 47` 09.6||13h 40m 56.18|
|Lambda Octantis||409.24||-82d 43` 07.8||21h 50m 54.25|
|Mu1 Octantis||329.79||-76d 10` 50.0||20h 42m 02.52|
|Mu2 Octantis||144.38||-75d 21` 01.5||20h 41m 43.74|
|Nu Octantis||69.15||-77d 23` 22.1||21h 41m 28.47|
|Omega Octantis||316.97||-84d 47` 16.2||15h 11m 08.79|
|Omicron Octantis||1792.11||-88d 21` 46.4||00h 12m 33.67|
|Phi Octantis||194.03||-75d 02` 39.6||18h 23m 36.44|
|Pi1 Octantis||393.92||-83d 13` 40.0||15h 01m 50.70|
|Pi2 Octantis||1953.07||-83d 02` 17.8||15h 04m 46.96|
|Polaris Australis||280.93||-88d 57` 23.4||21h 08m 46.01|
|Psi Octantis||125.54||-77d 30` 41.7||22h 17m 50.70|
|R Octantis||1964.84||-86d 23` 18.0||05h 26m 06.18|
|Rho Octantis||215.72||-84d 27` 55.8||15h 43m 16.10|
|Tau Octantis||486.09||-87d 28` 56.1||23h 28m 03.57|
|Theta Octantis||217.15||-77d 03` 55.1||00h 01m 35.85|
|Upsilon Octantis||324.22||-85d 58` 02.6||22h 31m 37.83|
|UV Octantis||1336.74||-83d 54` 09.4||16h 32m 25.85|
|X Oct||997.44||-84d 20` 54.1||10h 26m 14.33|
|Xi Octantis||492.69||-80d 07` 25.7||22h 50m 22.75|
|Zeta Octantis||162.27||-85d 39` 47.6||08h 56m 41.88|
|F||Yellow-White 6,000 - 7,500k||216|
|K||Light Orange Star 3,700 - 5,200k||207|
|G||Yellow 5,200 - 6,000k||175|
|A||White 7,500 - 10,000k||96|
|M||Red Dwarf Star <3,700k||42|
|B||Blue-White 10,500 - 30,000k||33|
|Ib||Less Luminous Supergiant||3|
|Iab||Intermediate Luminous Supergiant||1|
|R||R-Type Carbon Star||2|
|tonberry king||Wednesday, 4th October 2017 12:35:57 AM|
|FLAT EARTH BITCHES! YOUR PSEUDO SCIENCE IS OVER! :)|