Editing Epsilon Indi (section)

==Observation==
[[File:Epsilon Indi.png|thumb|left|Epsilon Indi with [[SkyMapper]] and a Hubble [[Near Infrared Camera and Multi-Object Spectrometer|NICMOS]] image of the brown dwarf binary]]
The constellation Indus (the Indian) first appeared in [[Johann Bayer]]'s celestial atlas ''Uranometria'' in 1603. The 1801 star atlas ''Uranographia'', by German astronomer [[Johann Elert Bode]], places ε Indi as one of the arrows being held in the left hand of the Indian.<ref name=Scholz2008/>

In 1847, [[Heinrich Louis d'Arrest]] compared the position of this star in several catalogues dating back to 1750, and discovered that it possessed a measureable [[proper motion]]. That is, he found that the star had changed position across the celestial sphere over time.<ref name="D'Arrest1847"/> In 1882–3, the [[parallax]] of ε Indi was measured by astronomers [[David Gill (astronomer)|David Gill]] and William L. Elkin at the [[Cape of Good Hope]]. They derived a parallax estimate of {{nowrap|0.22 ± 0.03 }}[[arcsecond]]s.<ref name="Callandreau1886"/> In 1923, [[Harlow Shapley]] of the [[Harvard Observatory]] derived a parallax of 0.45 arcseconds.<ref name="Shapley1923"/>

In 1972, the [[Orbiting Astronomical Observatory|Copernicus satellite]] was used to examine this star for the emission of [[ultraviolet]] laser signals. Again, the result was negative.<ref name="Lawton1975"/> ε Indi leads a [[Catalog of Nearby Habitable Systems|list]], compiled by [[Margaret Turnbull]] and [[Jill Tarter]] of the [[Carnegie Institution]] in [[Washington, D.C.|Washington]], of 17,129 nearby stars most likely to have planets that could support complex life.<ref name="Stahl2007"/>

The star is among five nearby paradigms as K-type stars of a type in a 'sweet spot' between Sun-analog stars and M stars for the likelihood of evolved life, per analysis of Giada Arney from NASA's [[Goddard Space Flight Center]].<ref name=Nasa2019-03-07>{{Cite web | url=https://www.nasa.gov/feature/goddard/2019/k-star-advantage |title = "Goldilocks" Stars May be "Just Right" for Finding Habitable Worlds|date = 22 February 2019 | work = [[NASA]] | author = Bill Steigerwald | quote = {{'}}I find that certain nearby K stars like 61 Cyg A/B, Epsilon Indi, Groombridge 1618, and HD 156026 may be particularly good targets for future biosignature searches,{{'}} said Arney.}}</ref>