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KX Librae

Gliese 570, Lalande 27173

Proper NameSometimes referred to as Proxima Librae*
Bayer DesignationNone
Flamsteed NumberNone
HR (BSC)5568
HD131977
Other designationsKX Librae, Gliese 570, Lalande 27173
ConstellationLibra
Right Ascension14h 57m 28s
Declination-21° 24' 56"
Distance19.2 light years
5.9 parsecs
MagnitudeApparent: +5.8
Absolute: +6.9
Spectral ClassK4V Orange Dwarf
Planets in this systemKX Librae b (HD 131977 b, Gliese 570 Ab), gas giant (unconfirmed, since retracted)
Optimum VisibilityMay
NotesA relatively near neighbour of the Sun at a distance of less than twenty light years, KX Librae is a triple system. Around the central orange star, a binary pair pursues an extremely eccentric orbit. Beyond that pair, the system also harbours a brown dwarf, designated KX Librae D, in a more distant orbit still.

* There are very occasional references to this star by the name of Proxima Librae. As a close neighbour of the Sun within the constellation of Libra, this is a perfectly appropriate name for the star, but its origins are obscure, and it does not seem to be widely accepted as a traditional name for KX Librae.

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