Star · A1V
17 Sex
17 Sex is a main-sequence star of spectral type A1V in the constellation Sextans, 688.7 light-years from the Sun.
| Other names | HIP 49812 |
|---|---|
| Constellation | Sextans |
| Distance | 688.7 light-years (211.2 pc) |
| Apparent magnitude | magnitude 5.91 |
| Absolute magnitude | magnitude −0.71 |
| Spectral type | A1V |
| Surface temperature | 9,810 K |
| Luminosity | 221 L☉ |
| Radius | 5.14 R☉ |
| Mass | 4.25 M☉ (estimated) |
| Right ascension (J2000) | 10h 10m 07.5s |
| Declination (J2000) | −8° 24′ 29″ |
| Space velocity (relative to the Sun) | 37.2 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.91). Visible from the whole Southern Hemisphere and north to latitude 82° N. It stands highest at midnight in February, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1337. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 12 million years.
The Sun seen from there
From a planet around 17 Sex, the Sun would look like a star of magnitude 11.45, in the direction where our sky has the constellation Pegasus. 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.