Star · K3V
Kepler-1684
Kepler-1684 is a main-sequence star of spectral type K3V in the constellation Cygnus, 2,029 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Cygnus |
|---|---|
| Distance | 2,029 light-years (622.0 pc) |
| Apparent magnitude | magnitude 15.95 |
| Absolute magnitude | magnitude 6.98 |
| Spectral type | K3V |
| Surface temperature | 4,710 K |
| Luminosity | 0.197 L☉ |
| Radius | 0.667 R☉ |
| Mass | 0.75 M☉ |
| Metallicity [Fe/H] | 0.13 |
| Right ascension (J2000) | 19h 36m 01.3s |
| Declination (J2000) | +46° 18′ 38″ |
| Space velocity (relative to the Sun) | 11.5 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 15.95. Visible from the whole Northern Hemisphere and south to latitude 44° S. North of latitude 44° 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 4 BC. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 36 million years.
The Sun seen from there
From a planet around Kepler-1684, the Sun would look like a star of magnitude 13.80, in the direction where our sky has the constellation Puppis. It would be invisible to the naked eye.
Planets
- Kepler-1684 b 47.7-day orbit · 2.87 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.