Star lore
Hadar
Direct answer
Hadar is Beta Centauri, a luminous multiple-star system and the inner of the two Southern Pointers near Crux.
Hadar is the blue-white inner Pointer linking Alpha Centauri to the Southern Cross.
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At a glance
- Found in
- Constellations & Star Lore
- Related
- Mimosa, Acrux, Shaula, Bellatrix
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The story behind Hadar
Hadar and the alternate approved name Agena reflect different historical naming traditions for Beta Centauri.
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Why Hadar matters
Hadar’s pairing with Alpha Centauri is one of the strongest orientation devices in the southern sky.
How to read Hadar
Follow the line from Alpha Centauri through Hadar toward Crux, then verify Acrux and Gacrux.
Hadar in practice: an example
Although the two Pointers seem comparable, Hadar is a distant luminous system while Alpha Centauri is nearby.
Where readings of Hadar go wrong
Hadar is not gravitationally paired with Alpha Centauri; their alignment is a perspective effect.
Sources and editorial method
Research references used for this entry include:
- IAU Division C Working Group on Star Names - Official IAU working group responsible for standardizing star names used in international astronomy.
- CDS SIMBAD Astronomical Database - Professional astronomical database for stellar identifiers, positions, classifications, and bibliography.
- Source
- The Great Almanac Dictionary
- Category
- Constellations & Star Lore
- Last updated
- 2026-09-26
Follow Hadar toward the Cross
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Common questions
What is Hadar?
Hadar is Beta Centauri, a luminous multiple-star system and the inner of the two Southern Pointers near Crux.
What do people get wrong about Hadar?
Hadar is not gravitationally paired with Alpha Centauri; their alignment is a perspective effect.
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