Constellations: Indus 'the Native American Indian'
Created | Updated Sep 19, 2008
I call to the South, to the land down below.
Turtle stands silent, as man strings his bow
to hunt food and fur for his kin before snow.
- Spirit Wind
Latin: | Indus |
Genitive: | Indi |
Short form: | Ind |
Area: | 294 sq deg |
Co-ordinates1: | 21h, -53° |
Origin: | Modern |
Indus is a small southern constellation which made its debut in the 1603 Uranometria of Johann Bayer.
The constellation was named after the race of people that originally lived in the Americas. The first Native Americans in Tierra Del Fuego2 were members of four tribes. These were the Yaghan, the Ono, the Alacaloof, and the Aush. It was their fires that gave the region its name. Early explorers believed that all land from the Bahamas westward were part of the Indies. This is why they named the residents Indians, and when creating a constellation honouring the natives used that name. The image associated with the first maps of this constellation was of a native man holding some arrows. Unfortunately, in both North and South America the natives have been victims of diseases brought by the white man and also victim of the colonial expansion of white settlers. It is a tribute to their tenacity that Native Americans still exist.
Indus, which has no bright stars, is bordered by Pavo,
Grus,
Tucana, Microscopium, Octans, and Telescopium.
Pieter Dirkszoon Keyser
This Dutchman (born sometime in 1540) spent many hours in the crow's nest mapping the southern sky. Indus is one of a dozen constellations delineated by him and his friend Frederick de Houtman during their voyage to the southern seas between 1595 and 1597 on board the Hollandia. One year before the ship returned to Holland he was taken ill and died off Java. His fellow mapmaker Frederick de Houtman returned the information to Holland after Dirkszoon Keyser's death.
Stars
About 400 years ago Johann Bayer first started putting lower case Greek letters to the brightest stars, a naming convention that is still in use. In the table below you will find the Bayer designations in the Greek alphabet for this constellation.
Alpha Indi
This orange giant was once known as the Persian star. It is part of a multiple system. Telescopes first managed to split the image of Alpha Indi in the year 1896. The three stars in the system are spaced just over one arc minute apart. The second and third component stars are 12.0 and 13.5 magnitude respectively.
The epsilon Indi system, which is 12 light years away, has a primary star, twin brown dwarfs3, and possibly planets. The brown dwarfs mass about 43 jovian units4 each and orbit around each other about 2 Astronomical Units apart at 1,500 Astronomical Units from the primary star. The now defunct Terrestrial Planet Finder (TPF) Observatory was scheduled to examine epsilon Indi as one of its prime targets.
Nu Indi is a tight binary star. A blue white 6.0 magnitude star is seperated from a 6.1 magnitude yellowish-white star by only 0.1 seconds of arc.
Star | Designation | Catalogue Number | Brightness (m) | Distance Mly | SC5 |
---|---|---|---|---|---|
α | Alpha | HR7879 | +3.11 | 101 | K0 |
β | Beta | HR7986 | +3.65 | 603 | K1 |
θ | Theta | HR8140 | +4.39 | 97 | A5 |
δ | Delta | HR8368 | +4.4 | 185 | F0 |
ε | Epsilon | HR8387 | +4.69 | 12 | K4 |
ζ | Zeta | HR7952 | +4.89 | 404 | K5 |
η | Eta | HR7920 | +4.51 | 79 | A7 |
ι | Iota | HR7968 | +5.05 | 567 | K1 |
κ-1 | Kappa-1 | HR8409 | +5.62 | 514 | K4 |
κ-2 | Kappa-2 | HR8369 | +6.12 | 217 | F3 |
μ | Mu | HR8055 | +5.16 | 349 | K2 |
ν | Nu | HD211998 | +5.296 | 110 | A3+F9 |
ο | Omicron | HR8333 | +5.53 | 558 | K2 |
ρ | Rho | HD216437 | +6.06 | 86 | G4 |
γ | Gamma | HR8188 | +6.12 | 415 | F1 |
Deep Space Objects
NGC 7038The NGC7
is continually updated by the
NGCIC/IC Project.
Perhaps the prettiest deep space object in this constellation is the galaxy NGC 7038. This object occupies 1.1 x 0.6 arcminutes in size. In 1983 a supernova was seen in this galaxy.
Catalogue | Type | Magnitude | Distance (mega-light years) | Remarks |
NGC 7029 | galaxy | +11.5 | 116 | fuzzy elliptical |
NGC 7038 | galaxy | +12.0 | 210 | nice spiral |
NGC 7041 | galaxy | +11.2 | 79 | angular elliptical |
NGC 7125 | galaxy | +12.0 | 134 | barred spiral |
IC 5152 | galaxy | +10.2 | 5.8 | dwarf galaxy |
Extrasolar Planets
A planetary system was found in this constellation 86.3 light years from Earth circling the star rho Indi. In that system
the planet (HD216437b) circles at a distance of 2.7 Astronomical Units and has a mass 2.1 jovian units.
4 A jovian unit is equal to the mass of the planet Jupiter.5spectral classification.6 combined value7 New General Catalogue of Nebulae and Star Clusters.