Epsilon Indi is a star approximately 11.82 light years from Earth's solar system. It is also known as HD 209100, HR 8387, CP-57°10015, GCTP 5314.00, LHS 67 and UGPMF 544.

In January 2003, astronomers announced the discovery of a brown dwarf with a mass of 47±10 Jupiter masses in orbit around Epsilon Indi at a distance of about 1500 AU. In August of 2003, astronomers discovered that this brown dwarf was actually a binary brown dwarf with a separation of about 2.5 AU. The smaller brown dwarf has a mass of 28±7 Jupiter masses.

Some facts about Epsilon Indi

• Parallax: 0.276 arcsecs
• Spectral type: K5 V
• Radial velocity: -40 km/s
• Proper Motion: 4.7 arcsec/year
• Apparent Visual Magnitude: 4.69
• Absolute Visual Magnitude: 6.89
• Luminosity: 0.27 Solar Luminosities

Epsilon Indi in fiction

Epsilon Indi is held by many Star Trek fans to be the home star system of the Andorian race. The star system also made an appearance in the Star Trek Original Series episode And the Children Shall Lead, where Epsilon Indi was the home star system to an evil energy being known as "Gorkon".

See also:

• Epsilon
• List of nearest stars