subgiant · B7IV
Phact
Phact is a blue subgiant (spectral type B7IV) about 260 light-years away. With an apparent magnitude of 2.67 it is easy to see even from a city.
The brightest star in Columba (the Dove).
Its light output is roughly 460 times that of the Sun (a rough estimate in visible light, calculated from brightness and distance).
From Germany (52° N) it rises and sets; it is best seen in the evening in December.
Key facts
- Distance
- ≈ 260 light-years
- Spectral type
- B7IV (subgiant)
- Colour
- Blue
- Apparent magnitude
- 2.67 mag
- Luminosity
- ≈ 460 × Sun
- Position
- Right ascension 5h 40m, declination -34.1°
More well-known stars
Data: Hipparcos / HYG catalogue (CC BY-SA 4.0). Luminosity and visibility are calculated estimates.