Star · F3V
τ⁵ Ser
τ⁵ Ser is a main-sequence star of spectral type F3V in the constellation Serpens, 169.3 light-years from the Sun.
| Other names | HIP 76424 |
|---|---|
| Constellation | Serpens |
| Distance | 169.3 light-years (51.9 pc) |
| Apparent magnitude | magnitude 5.93 |
| Absolute magnitude | magnitude 2.35 |
| Spectral type | F3V |
| Surface temperature | 7,140 K |
| Luminosity | 9.75 L☉ |
| Radius | 2.04 R☉ |
| Mass | 1.77 M☉ (estimated) |
| Right ascension (J2000) | 15h 36m 29.2s |
| Declination (J2000) | +16° 07′ 09″ |
| Space velocity (relative to the Sun) | 20.6 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.93). Visible from the whole Northern Hemisphere and south to latitude 74° S. North of latitude 74° 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 1857. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.0 million years.
The Sun seen from there
From a planet around τ⁵ Ser, the Sun would look like a star of magnitude 8.41, 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 76408 9.22 light-years
- τ⁷ Ser 9.45 light-years
- SDSS J154625.94+160917.9 10.2 light-years
- HIP 75269 10.9 light-years
- HIP 77327 14.8 light-years
- HIP 77083 15.0 light-years
- HIP 77226 16.0 light-years
- HIP 77269 16.0 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.