Sections

Catalogues

Show the direction and distance to this object on the Galactic Map.

Proper Name	Ran
Bayer Designation	Epsilon Eridani
Flamsteed Number	18 Eridani
HR (BSC)	1084
HD	22049
Constellation	Eridanus
Right Ascension	3h 32m 56s
Declination	-9° 27' 30"
Distance	10.5 light years 3.2 parsecs
Magnitude	Apparent: +3.73 Absolute: +6.19
Spectral Class	K2V orange dwarf
Planets in this system	Ægir (Ran b, Epsilon Eridani b), gas giant or brown dwarf Ran c (Epsilon Eridani c), theoretical unconfirmed exoplanet
Optimum Visibility	November / December
Notes	Epsilon Eridani, formally named Ran, is a variable star of the BY Draconis type, with extensive starspots on its surface causing its brightness to change as it rotates. It is surrounded by three separate circumstellar discs, and is orbited by a massive object named Ægir, probably a gas giant planet, at a distance of some 3.5 AU.

Imagery provided by Aladin sky atlas

Among the dustlanes surrounding Ran lurks its companion Ægir, a gas giant planet or possibly a brown dwarf, as shown here.

An orange dwarf star in the northern parts of Eridanus, the River. Ran, perhaps better known by its Bayer designation of Epsilon Eridani, is a faint dwarf star, much less luminous than the Sun, and most notable for its proximity to the Solar System - it is just 10.5 light years away.

v2.1g