Eta Piscium
 Location of η Piscium(circled) |
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| Observation data Epoch J2000.0 Equinox J2000.0 |
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|---|---|
| Constellation | Pisces |
| Right ascension | 01h 31m 29.0s |
| Declination | +15° 20' 45" |
| Apparent magnitude (V) | +3.62 |
| Distance | 294 ly (90 pc) |
| Spectral type | G7IIIa |
| Other designations | |
| Database references | |
| SIMBAD | data |
Eta Piscium (Eta Psc, η Piscium, η Psc), also named Alpherg, is the brightest star in the constellation Pisces. Eta Piscium is located at a distance of about 294 light years from Earth, and shines at magnitude +3.62. It is of Spectral type G7 III.
The total luminosity of this star is 316 times that of the Sun, while its surface temperature is 4930 kelvin. The star has a radius of 26 ± 2solar radii, while its mass is 3.5 to 4 solar masses.
Eta Piscium has a faint companion star with a separation of about 1".
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