Star profile
Tau 7 Eridani
What is Tau 7 Eridani
Tau-7 Eridani is one of a long series of stars bearing the letter Tau along the celestial river, that sinuous course winding from Orion to the distant south. It is a white A-type star at 251 light-years, one of many pale beacons marking the flow of Eridanus, among the oldest and longest constellations of the firmament.
Where it is and when to see it
Tau 7 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 November, when it culminates around midnight.
- From London it culminates about 15° above the horizon.
- From New York it culminates about 25° above the horizon.
- From Sydney it culminates about 80° above the horizon.
It can be seen from anywhere south of 66° N.
It ranks no. 61 in brightness among the 129 stars of Eridanus in our catalogue. To find it, start from Achernar, the brightest: it lies about 41° away (a fist at arm's length covers about 10°).
The light you see today left it about 250 years ago.
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Astronomical data for Tau 7 Eridani
- Constellation
- Eridanus
- Apparent magnitude
- 5.24
- Distance
- 250.9 light years
- Coordinates (J2000)
- RA 56.915° · Dec -23.875°
- Catalogue
- HIP 17717 · HD 23878
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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
- HIP 144565.23
- 20 Eridani5.24
- 24 Eridani5.24
- HIP 212975.24
- Rho 3 Eridani5.26