Alpha Indi — Star in Indus
About Alpha Ind
Description
Alpha Indi is an orange giant of spectral type K0III at magnitude 3.11, the brightest star in Indus (the Indian). Located about 101 light-years from Earth, it has a luminosity of roughly 62 times solar. It is one of the closer giant stars to the Sun.
Observing Tips
Alpha Ind lies in the far southern sky between Grus and Microscopium. It is the brightest star in the faint constellation Indus. Only visible from the southern hemisphere and very low northern latitudes. Best observed September through November.
History
Indus was created by Petrus Plancius from Dutch navigators' observations. The constellation was originally intended to represent a native person encountered during voyages to the East Indies. Alpha Indi has no traditional proper name.
Fun Facts
Epsilon Indi, another star in this constellation, is only 11.8 light-years from Earth and has a brown dwarf binary companion — making the constellation of Indus home to one of the nearest known brown dwarf systems, even though Alpha Ind itself is unremarkable.
Observe
1Physical Properties
2Position & Identifiers
3How easy to spot?
| Equipment | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| Naked eye Naked eye | Easy | Easy | Medium+ |
| 50 mm finder 50mm finder | Easy | Easy | Easy |
| 150 mm telescope 150mm scope | Easy | Easy | Easy |
Bortle 3 = rural · 4 = outer suburbs · 5 = suburbs
4Visibility
Set a location in User Settings to see visibility data.
5Survey Image
Loading survey image…
Explore
7
Size Comparison
8
Compare Stars
9
Spectral Classification
10
Hertzsprung-Russell Diagram
11
Stellar Lifecycle
12
Blackbody Spectrum
13
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
14
Stellar Fusion
Discover
15
Light Travel Time Machine
16
Relativistic Travel
Nearby in the Sky
Other targets within a few degrees — pan your scope a little and keep exploring.
Visibility scores assume a 150 mm Newton at Bortle 4.
Explore Nightbase
Related knowledge, tools, and stories — no observation planning required.