Star · G V
HATS-18
HATS-18 is a main-sequence star of spectral type G V in the constellation Hydra, 2,036 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Hydra |
|---|---|
| Distance | 2,036 light-years (624.4 pc) |
| Apparent magnitude | magnitude 14.19 |
| Absolute magnitude | magnitude 5.21 |
| Spectral type | G V |
| Surface temperature | 5,600 K |
| Luminosity | 0.93 L☉ |
| Radius | 1.02 R☉ |
| Mass | 1.04 M☉ |
| Age | 4.2 billion years |
| Metallicity [Fe/H] | 0.28 |
| Right ascension (J2000) | 11h 35m 49.8s |
| Declination (J2000) | −29° 09′ 22″ |
| Space velocity (relative to the Sun) | 17.3 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 14.19. Visible from the whole Southern Hemisphere and north to latitude 61° N. South of latitude 61° S it never sets. It stands highest at midnight in March, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around 11 BC. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 36 million years.
The Sun seen from there
From a planet around HATS-18, the Sun would look like a star of magnitude 13.81, in the direction where our sky has the constellation Pegasus. It would be invisible to the naked eye.
Planets
- HATS-18 b 0.838-day orbit · 14.9 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.