Star · K0III
11 Ser
11 Ser is a giant star of spectral type K0III in the constellation Serpens, 272.7 light-years from the Sun.
| Other names | HIP 76133 |
|---|---|
| Constellation | Serpens |
| Distance | 272.7 light-years (83.6 pc) |
| Apparent magnitude | magnitude 5.50 |
| Absolute magnitude | magnitude 0.89 |
| Spectral type | K0III |
| Surface temperature | 4,530 K |
| Luminosity | 67.5 L☉ |
| Radius | 13.3 R☉ |
| Mass | 3.03 M☉ (estimated) |
| Right ascension (J2000) | 15h 32m 57.9s |
| Declination (J2000) | −1° 11′ 11″ |
| Space velocity (relative to the Sun) | 24.1 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.50). Visible from the whole Southern Hemisphere and north to latitude 89° N. 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 1753. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 4.8 million years.
The Sun seen from there
From a planet around 11 Ser, the Sun would look like a star of magnitude 9.44, in the direction where our sky has the constellation Taurus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 76365 12.2 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.