The AsterNym star registry
Achernar
blue · Eridanus · α Eri
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About this star
Achernar is a blue star in the constellation Eridanus, 139 ly from Earth. The light leaving it tonight began travelling 139 years ago — bright enough to find with your own eyes on a clear night.
- Designation
- α Eri · HIP 7588
- Spectral type
- B6 Vpe · blue
- Right ascension
- 01h 37m 43s
- Declination
- −57° 14′ 12″
- Magnitude
- 0.46 naked-eye
- Distance
- 139 ly
Coordinates are J2000 epoch, checkable against any astronomical source or planetarium app.