Star · M4
HIP 9809
HIP 9809 is a supergiant star of spectral type M4 in the constellation Pisces, 937.3 light-years from the Sun.
| Constellation | Pisces |
|---|---|
| Distance | 937.3 light-years (287.4 pc) |
| Apparent magnitude | magnitude 6.27 |
| Absolute magnitude | magnitude −1.02 |
| Spectral type | M4 |
| Surface temperature | 3,600 K |
| Luminosity | 1,070 L☉ |
| Radius | 84.1 R☉ |
| Mass | 6.66 M☉ (estimated) |
| Right ascension (J2000) | 2h 06m 12.3s |
| Declination (J2000) | +8° 14′ 53″ |
| Space velocity (relative to the Sun) | 37.8 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.27). Visible from the whole Northern Hemisphere and south to latitude 82° S. It stands highest at midnight in October, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1089. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 17 million years.
The Sun seen from there
From a planet around HIP 9809, the Sun would look like a star of magnitude 12.12, in the direction where our sky has the constellation Virgo. 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.