Star · G5 V
NGTS-18
NGTS-18 is a main-sequence star of spectral type G5 V in the constellation Hydra, 3,575 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Hydra |
|---|---|
| Distance | 3,575 light-years (1,096 pc) |
| Apparent magnitude | magnitude 14.59 |
| Absolute magnitude | magnitude 4.39 |
| Spectral type | G5 V |
| Surface temperature | 5,610 K |
| Luminosity | 1.86 L☉ |
| Radius | 1.39 R☉ |
| Mass | 1 M☉ |
| Age | 10.8 billion years |
| Metallicity [Fe/H] | 0.15 |
| Right ascension (J2000) | 12h 02m 11.1s |
| Declination (J2000) | −35° 32′ 55″ |
| Space velocity (relative to the Sun) | 14.8 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 14.59. Visible from the whole Southern Hemisphere and north to latitude 54° N. South of latitude 54° 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 1550 BC. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 63 million years.
The Sun seen from there
From a planet around NGTS-18, the Sun would look like a star of magnitude 15.03, in the direction where our sky has the constellation Andromeda. It would be invisible to the naked eye.
Planets
- NGTS-18 b 3.05-day orbit · 13.6 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.