Star · B9III
HIP 137
HIP 137 is a giant star of spectral type B9III in the constellation Andromeda, 1,096 light-years from the Sun.
| Constellation | Andromeda |
|---|---|
| Distance | 1,096 light-years (335.9 pc) |
| Apparent magnitude | magnitude 6.25 |
| Absolute magnitude | magnitude −1.38 |
| Spectral type | B9III |
| Surface temperature | 10,680 K |
| Luminosity | 469 L☉ |
| Radius | 6.32 R☉ |
| Mass | 5.26 M☉ (estimated) |
| Right ascension (J2000) | 0h 01m 43.8s |
| Declination (J2000) | +42° 22′ 02″ |
| Space velocity (relative to the Sun) | 8.0 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.25). Visible from the whole Northern Hemisphere and south to latitude 48° S. North of latitude 48° N it never sets. It stands highest at midnight in September, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 930. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 19 million years.
The Sun seen from there
From a planet around HIP 137, the Sun would look like a star of magnitude 12.46, in the direction where our sky has the constellation Centaurus. 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.