Menu

Alpha Indi — Star in Indus

Magnitude 3.1m Star Indus (Ind) Visible
Star Map
+ List + Plan

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

Magnitude 3.11
Spectral Type K0III-IV giant
Star Color Orange (B-V 1.00)
Distance 98 ly

2Position & Identifiers

RA 20h 37m 34.0s
Dec -47° 17' 29.0"
Constellation Indus (Ind)
HR 7869
HIP 101772
HD 196171
SAO 230300
Bayer Alpha

3How easy to spot?

Sign in and configure your equipment and default location to see a personalized row.
Equipment Bortle 3 Bortle 4 Bortle 5
Naked eye Easy Easy Medium+
50mm finder Easy Easy Easy
150mm scope Easy Easy Easy
Easy Medium Hard Very hard Impossible

Bortle 3 = rural · 4 = outer suburbs · 5 = suburbs

4Visibility

Set a location in User Settings to see visibility data.

Best season Jun – Aug (peak: Jul)

5Survey Image

Loading survey image…

Explore

7

Size Comparison

Querying VizieR for stellar data…
8

Compare Stars

9

Spectral Classification

10

Hertzsprung-Russell Diagram

Loading HR 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

}