Star · G4 V
NGTS-17
NGTS-17 is a main-sequence star of spectral type G4 V in the constellation Caelum, 3,393 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Caelum |
|---|---|
| Distance | 3,393 light-years (1,040 pc) |
| Apparent magnitude | magnitude 14.41 |
| Absolute magnitude | magnitude 4.32 |
| Spectral type | G4 V |
| Surface temperature | 5,650 K |
| Luminosity | 1.74 L☉ |
| Radius | 1.34 R☉ |
| Mass | 1.03 M☉ |
| Age | 9.2 billion years |
| Metallicity [Fe/H] | 0.15 |
| Right ascension (J2000) | 4h 51m 36.1s |
| Declination (J2000) | −34° 13′ 34″ |
| Space velocity (relative to the Sun) | 58.2 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 14.41. Visible from the whole Southern Hemisphere and north to latitude 56° N. South of latitude 56° S it never sets. It stands highest at midnight in December, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around 1368 BC. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 60 million years.
The Sun seen from there
From a planet around NGTS-17, the Sun would look like a star of magnitude 14.92, in the direction where our sky has the constellation Hercules. It would be invisible to the naked eye.
Planets
- NGTS-17 b 3.24-day orbit · 13.9 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.