Star · A3V
β Ser
β Ser is a main-sequence star of spectral type A3V in the constellation Serpens, 151.1 light-years from the Sun.
| Other names | HIP 77233 |
|---|---|
| Constellation | Serpens |
| Distance | 151.1 light-years (46.3 pc) |
| Apparent magnitude | magnitude 3.65 |
| Absolute magnitude | magnitude 0.32 |
| Spectral type | A3V |
| Surface temperature | 9,300 K |
| Luminosity | 78.8 L☉ |
| Radius | 3.42 R☉ |
| Mass | 3.16 M☉ (estimated) |
| Right ascension (J2000) | 15h 46m 11.3s |
| Declination (J2000) | +15° 25′ 19″ |
| Space velocity (relative to the Sun) | 17.9 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 3.65). Visible from the whole Northern Hemisphere and south to latitude 75° S. North of latitude 75° N it never sets. It stands highest at midnight in May, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1875. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.7 million years.
The Sun seen from there
From a planet around β Ser, the Sun would look like a star of magnitude 8.16, in the direction where our sky has the constellation Eridanus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 77083 4.55 light-years
- HIP 76912 7.39 light-years
- HIP 75978 11.2 light-years
- HIP 78688 12.6 light-years
- 2MASS J15565004+1449081 12.7 light-years
- SDSS J155644.35+172308.9 13.2 light-years
- HIP 77269 15.1 light-years
- HIP 76543 15.2 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.