
Star profile
Sigma Piscium
Hot blue starWhat is Sigma Piscium
Sigma Piscium is a blue-white B-type star lying some 434 light-years away, in the constellation of the Fishes, that zodiacal asterism shaped like a cord linking two small celestial schools. Its burning surface, far hotter than the Sun's, gives it a cool, sharp light that stands out against the quiet background of Pisces, a region of the sky usually associated with fainter stars.
Where it is and when to see it
Sigma Piscium lies in the northern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is October, when it culminates around midnight.
- From London it culminates about 70° above the horizon.
- From New York it culminates about 81° above the horizon.
- From Sydney it culminates about 24° above the horizon.
It can be seen from anywhere north of 58° S.
It ranks no. 43 in brightness among the 79 stars of Pisces in our catalogue. To find it, start from Alpherg, the brightest: it lies about 18° away (a fist at arm's length covers about 10°).
The light you see today left it about 430 years ago.
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Astronomical data for Sigma Piscium
- Constellation
- Pisces
- Apparent magnitude
- 5.50
- Distance
- 433.8 light years
- Coordinates (J2000)
- RA 15.705° · Dec 31.804°
- Catalogue
- HIP 4889 · HD 6118
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Other stars in Pisces
Pisces has 79 stars in Stelvia's catalogue. Here are a few of them.
- AlphergEta Piscium3.62
- Gamma Piscium3.70
- AlreschaAlpha Piscium3.82
- 2 Piscium5.43
- 68 Piscium5.44
- 20 Piscium5.49
- 94 Piscium5.50
- 58 Piscium5.51