The River
Eridanus
Genitive: Eridani · abbreviation Eri
Best evening month
December
Visible from
90°S to 72°N
Centre RA
3h 30m 00s
Centre Dec
−18° 00′
In your sky
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Mythology & origin
The river Eridanus, into which Phaethon fell after losing control of the Sun's chariot. It winds from Orion's foot to brilliant Achernar.
Ptolemy · Almagest, 2nd century AD
Brightest stars
- mag 0.45
Achernar
α Eridani · HIP 7588
- mag 2.78
Cursa
β Eridani · HIP 23875
- mag 2.88
Acamar
θ1 Eridani · HIP 13847
- mag 2.97
Zaurak
γ Eridani · HIP 18543
- mag 3.52
Rana
δ Eridani · HIP 17378
- mag 3.55
Beemim
υ4 Eridani · HIP 20042
- mag 3.56
φ Eridani
HIP 10602
- mag 3.69
χ Eridani
HIP 9007
- mag 3.70
Angetenar
τ4 Eridani · HIP 15474
- mag 3.72
Ran
ε Eridani · HIP 16537