Star · F4V
13 Sex
13 Sex is a main-sequence star of spectral type F4V in the constellation Sextans, 185.0 light-years from the Sun.
| Other names | HIP 49329 |
|---|---|
| Constellation | Sextans |
| Distance | 185.0 light-years (56.7 pc) |
| Apparent magnitude | magnitude 6.43 |
| Absolute magnitude | magnitude 2.66 |
| Spectral type | F4V |
| Surface temperature | 6,890 K |
| Luminosity | 7.32 L☉ |
| Radius | 1.9 R☉ |
| Mass | 1.64 M☉ (estimated) |
| Right ascension (J2000) | 10h 04m 08.4s |
| Declination (J2000) | +3° 12′ 04″ |
| Space velocity (relative to the Sun) | 32.9 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.43). Visible from the whole Northern Hemisphere and south to latitude 87° S. 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 1841. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.3 million years.
The Sun seen from there
From a planet around 13 Sex, the Sun would look like a star of magnitude 8.60, in the direction where our sky has the constellation Aquarius. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 49694 8.22 light-years
- SDSS J101951.13+044944.1 13.8 light-years
- ULAS J101618.77+000028.0 14.3 light-years
- HIP 50870 18.5 light-years
- ULAS J095829.86-003932.0 19.6 light-years
- HIP 48412 20.0 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.