Star · G2I
Sadalmelik
Sadalmelik is a supergiant star of spectral type G2I in the constellation Aquarius, 659.6 light-years from the Sun.
| Other names | α Aqr · HIP 109074 |
|---|---|
| Constellation | Aquarius |
| Distance | 659.6 light-years (202.2 pc) |
| Apparent magnitude | magnitude 2.95 |
| Absolute magnitude | magnitude −3.58 |
| Spectral type | G2I |
| Surface temperature | 4,820 K |
| Luminosity | 3,470 L☉ |
| Radius | 84.6 R☉ |
| Mass | 9.33 M☉ (estimated) |
| Right ascension (J2000) | 22h 05m 47.0s |
| Declination (J2000) | −0° 19′ 11″ |
| Space velocity (relative to the Sun) | 21.9 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 2.95). Visible from the whole Southern Hemisphere and north to latitude 90° N. It stands highest at midnight in August, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1366. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 12 million years.
The Sun seen from there
From a planet around Sadalmelik, the Sun would look like a star of magnitude 11.36, in the direction where our sky has the constellation Sextans. It would be invisible to the naked eye.
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.