Star · K0V
Kepler-1539
Kepler-1539 is a main-sequence star of spectral type K0V in the constellation Lyra, 2,441 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Lyra |
|---|---|
| Distance | 2,441 light-years (748.3 pc) |
| Apparent magnitude | magnitude 15.49 |
| Absolute magnitude | magnitude 6.12 |
| Spectral type | K0V |
| Surface temperature | 5,180 K |
| Luminosity | 0.375 L☉ |
| Radius | 0.8 R☉ |
| Mass | 0.84 M☉ |
| Age | 4.8 billion years |
| Metallicity [Fe/H] | -0.01 |
| Right ascension (J2000) | 18h 56m 52.7s |
| Declination (J2000) | +44° 16′ 07″ |
| Space velocity (relative to the Sun) | 26.8 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 15.49. Visible from the whole Northern Hemisphere and south to latitude 46° S. North of latitude 46° N it never sets. It stands highest at midnight in July, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around 416 BC. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 43 million years.
The Sun seen from there
From a planet around Kepler-1539, the Sun would look like a star of magnitude 14.20, in the direction where our sky has the constellation Puppis. It would be invisible to the naked eye.
Planets
- Kepler-1539 b 133-day orbit · 2.7 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.