Star · F4 V
KELT-18
KELT-18 is a main-sequence star of spectral type F4 V in the constellation Ursa Major, 1,032 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Ursa Major |
|---|---|
| Distance | 1,032 light-years (316.4 pc) |
| Apparent magnitude | magnitude 10.21 |
| Absolute magnitude | magnitude 2.71 |
| Spectral type | F4 V |
| Surface temperature | 6,670 K |
| Luminosity | 6.5 L☉ |
| Radius | 1.91 R☉ |
| Mass | 1.52 M☉ |
| Age | 1.9 billion years |
| Metallicity [Fe/H] | 0.09 |
| Right ascension (J2000) | 14h 26m 05.8s |
| Declination (J2000) | +59° 26′ 39″ |
| Space velocity (relative to the Sun) | 32.1 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 10.21. Visible from the whole Northern Hemisphere and south to latitude 31° S. North of latitude 31° N it never sets. It stands highest at midnight in April, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 994. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 18 million years.
The Sun seen from there
From a planet around KELT-18, the Sun would look like a star of magnitude 12.33, in the direction where our sky has the constellation Horologium. It would be invisible to the naked eye.
Planets
- KELT-18 b 2.87-day orbit · 17.6 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.