Star · K9V
Kepler-438
Kepler-438 is a main-sequence star of spectral type K9V in the constellation Lyra, 639.1 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Lyra |
|---|---|
| Distance | 639.1 light-years (195.9 pc) |
| Apparent magnitude | magnitude 15.10 |
| Absolute magnitude | magnitude 8.64 |
| Spectral type | K9V |
| Surface temperature | 3,750 K |
| Luminosity | 0.044 L☉ |
| Radius | 0.52 R☉ |
| Mass | 0.544 M☉ |
| Age | 4.4 billion years |
| Metallicity [Fe/H] | 0.16 |
| Right ascension (J2000) | 18h 46m 35.0s |
| Declination (J2000) | +41° 57′ 04″ |
| Space velocity (relative to the Sun) | 28.4 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 15.10. Visible from the whole Northern Hemisphere and south to latitude 48° S. North of latitude 48° 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 the year 1387. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 11 million years.
The Sun seen from there
From a planet around Kepler-438, the Sun would look like a star of magnitude 11.29, in the direction where our sky has the constellation Puppis. It would be invisible to the naked eye.
Planets
- Kepler-438 b 35.2-day orbit · 1.12 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.