Star · F7V
Kepler-1238
Kepler-1238 is a main-sequence star of spectral type F7V in the constellation Cygnus, 5,323 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Cygnus |
|---|---|
| Distance | 5,323 light-years (1,632 pc) |
| Apparent magnitude | magnitude 14.92 |
| Absolute magnitude | magnitude 3.86 |
| Spectral type | F7V |
| Surface temperature | 6,390 K |
| Luminosity | 3.84 L☉ |
| Radius | 1.48 R☉ |
| Mass | 1.3 M☉ |
| Age | 2.1 billion years |
| Metallicity [Fe/H] | 0.05 |
| Right ascension (J2000) | 19h 51m 37.4s |
| Declination (J2000) | +40° 09′ 46″ |
| Space velocity (relative to the Sun) | 34.9 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 14.92. Visible from the whole Northern Hemisphere and south to latitude 50° S. North of latitude 50° 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 5,323 years ago. At that time the first farming villages were being founded; there was no writing yet. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 94 million years.
The Sun seen from there
From a planet around Kepler-1238, the Sun would look like a star of magnitude 15.89, in the direction where our sky has the constellation Puppis. It would be invisible to the naked eye.
Planets
- Kepler-1238 b 4.15-day orbit · 1.93 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.