Star · G6V
Kepler-684
Kepler-684 is a main-sequence star of spectral type G6V in the constellation Lyra, 5,647 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Lyra |
|---|---|
| Distance | 5,647 light-years (1,731 pc) |
| Apparent magnitude | magnitude 15.70 |
| Absolute magnitude | magnitude 4.51 |
| Spectral type | G6V |
| Surface temperature | 5,490 K |
| Luminosity | 1.62 L☉ |
| Radius | 0.86 R☉ |
| Mass | 0.89 M☉ |
| Age | 4.4 billion years |
| Metallicity [Fe/H] | -0.11 |
| Right ascension (J2000) | 19h 23m 28.9s |
| Declination (J2000) | +38° 16′ 25″ |
| Space velocity (relative to the Sun) | 57.9 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 15.70. Visible from the whole Northern Hemisphere and south to latitude 52° S. North of latitude 52° 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 5,647 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 100 million years.
The Sun seen from there
From a planet around Kepler-684, the Sun would look like a star of magnitude 16.02, in the direction where our sky has the constellation Puppis. It would be invisible to the naked eye.
Planets
- Kepler-684 b 6.77-day orbit · 3.36 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.