Star · M3
HIP 37521
HIP 37521 is a supergiant star of spectral type M3 in the constellation Gemini, 1,197 light-years from the Sun.
| Constellation | Gemini |
|---|---|
| Distance | 1,197 light-years (366.9 pc) |
| Apparent magnitude | magnitude 5.55 |
| Absolute magnitude | magnitude −2.27 |
| Spectral type | M3 |
| Surface temperature | 3,590 K |
| Luminosity | 3,420 L☉ |
| Radius | 151 R☉ |
| Mass | 9.29 M☉ (estimated) |
| Right ascension (J2000) | 7h 42m 03.2s |
| Declination (J2000) | +14° 12′ 31″ |
| Space velocity (relative to the Sun) | 23.5 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.55). Visible from the whole Northern Hemisphere and south to latitude 76° S. North of latitude 76° N it never sets. It stands highest at midnight in January, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 829. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 21 million years.
The Sun seen from there
From a planet around HIP 37521, the Sun would look like a star of magnitude 12.65, in the direction where our sky has the constellation Sagittarius. 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.