Star profile
Omega Eridani
What is Omega Eridani
Omega Eridani is a white A-type star along the long course of the celestial river, the constellation that meanders from Orion's foot to the southernmost latitudes. It shines with a clean, unshaded light, the kind characteristic of stars that have not yet altered the composition of their surfaces. Its light began the journey toward us 235 years ago, when Europe still spoke of the enlightened courts of the eighteenth century.
Where it is and when to see it
Omega Eridani lies in the southern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is December, when it culminates around midnight.
- From London it culminates about 33° above the horizon.
- From New York it culminates about 44° above the horizon.
- From Sydney it culminates about 62° above the horizon.
It can be seen from anywhere south of 85° N.
It ranks no. 28 in brightness among the 129 stars of Eridanus in our catalogue. To find it, start from Achernar, the brightest: it lies about 64° away (a fist at arm's length covers about 10°).
The light you see today left it about 240 years ago.
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Astronomical data for Omega Eridani
- Constellation
- Eridanus
- Apparent magnitude
- 4.36
- Distance
- 235.0 light years
- Coordinates (J2000)
- RA 73.224° · Dec -5.453°
- Catalogue
- HIP 22701 · HD 31109
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Other stars in Eridanus
Eridanus has 129 stars in Stelvia's catalogue. Here are a few of them.
- AchernarAlpha Eridani0.45
- CursaBeta Eridani2.78
- AcamarTheta 1 Eridani2.88
- Tau 5 Eridani4.26
- HIP 177974.30
- 54 Eridani4.32
- Pi Eridani4.43
- KeidOmicron 2 Eridani4.43