main-sequence star · A3V
Megrez
Megrez is a blue-white main-sequence star (spectral type A3V) about 81 light-years away. With an apparent magnitude of 3.33 it is easy to see even from a city.
The faintest of the seven stars of the Big Dipper.
Its light output is roughly 20 times that of the Sun (a rough estimate in visible light, calculated from brightness and distance).
From Germany (52° N) it never sets: it stays above the horizon all year.
Key facts
- Distance
- ≈ 81 light-years
- Spectral type
- A3V (main-sequence star)
- Colour
- Blue-white
- Apparent magnitude
- 3.33 mag
- Luminosity
- ≈ 20 × Sun
- Position
- Right ascension 12h 15m, declination 57°
More well-known stars
Data: Hipparcos / HYG catalogue (CC BY-SA 4.0). Luminosity and visibility are calculated estimates.