Star · G1V
18 Sco
18 Sco is a main-sequence star of spectral type G1V in the constellation Scorpius, 46.1 light-years from the Sun.
| Other names | Gl 616 · HIP 79672 |
|---|---|
| Constellation | Scorpius |
| Distance | 46.1 light-years (14.1 pc) |
| Apparent magnitude | magnitude 5.49 |
| Absolute magnitude | magnitude 4.74 |
| Spectral type | G1V |
| Surface temperature | 5,770 K |
| Luminosity | 1.18 L☉ |
| Radius | 1.09 R☉ |
| Mass | 1.04 M☉ (estimated) |
| Right ascension (J2000) | 16h 15m 37.2s |
| Declination (J2000) | −8° 22′ 10″ |
| Space velocity (relative to the Sun) | 38.5 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.49). Visible from the whole Southern Hemisphere and north to latitude 82° 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 1980. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 818 thousand years.
The Sun seen from there
From a planet around 18 Sco, the Sun would look like a star of magnitude 5.58, in the direction where our sky has the constellation Taurus. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Gl 606 4.12 light-years
- 2MASSW J1555157-095605 4.61 light-years
- Sharjah 8.71 light-years
- GJ 3916 8.76 light-years
- Gl 592 8.87 light-years
- GJ 3954 10.1 light-years
- PSO J247.3273+03.5932 11.1 light-years
- Gl 596.1B 11.2 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.