Star profile
30 Piscium
Variable starWhat is 30 Piscium
30 Piscium —also catalogued as YY Piscium— is an aged red giant that has exhausted the hydrogen in its core and swelled to about 109 solar radii. Its brightness drifts gently between magnitudes 4.31 and 4.41 with no clean period, hinting at cycles of 23, 32, 53 and 167 days. Its light takes 432 years to reach us, having set out around the time Shakespeare was writing his last plays.
Where it is and when to see it
30 Piscium lies in the southern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is September: the Sun sits at the opposite point of the sky and the star culminates around midnight. How high it climbs above the horizon depends on the latitude you watch from.
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A public signature from a real person. The chosen name is a symbolic denomination within Stelvia, with no official standing or IAU recognition: the sky is not for sale and belongs to no one.
Astronomical data for 30 Piscium
- Constellation
- Pisces
- Apparent magnitude
- 4.37
- Distance
- 432.1 light years
- Coordinates (J2000)
- RA 0.490° · Dec -6.014°
- Catalogue
- HIP 154 · HD 224935
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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
- TorcularOmicron Piscium4.26
- Theta Piscium4.27
- Epsilon Piscium4.27
- Delta Piscium4.44
- Nu Piscium4.45