Star · K0
HD 191806
HD 191806 is a main-sequence star of spectral type K0 in the constellation Cygnus, 214.6 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | HIP 99306 |
|---|---|
| Constellation | Cygnus |
| Distance | 214.6 light-years (65.8 pc) |
| Apparent magnitude | magnitude 8.09 |
| Absolute magnitude | magnitude 4.00 |
| Spectral type | K0 |
| Surface temperature | 6,010 K |
| Luminosity | 2.23 L☉ |
| Radius | 1.4 R☉ |
| Mass | 1.07 M☉ |
| Age | 2.9 billion years |
| Metallicity [Fe/H] | 0.30 |
| Right ascension (J2000) | 20h 09m 28.3s |
| Declination (J2000) | +52° 16′ 35″ |
| Space velocity (relative to the Sun) | 48.1 km/s |
In the sky
Too faint for the naked eye (magnitude 8.09); binoculars will find it. Visible from the whole Northern Hemisphere and south to latitude 38° S. North of latitude 38° 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 1811. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.8 million years.
The Sun seen from there
From a planet around HD 191806, the Sun would look like a star of magnitude 8.92, in the direction where our sky has the constellation Carina. It would be invisible to the naked eye.
Planets
- HD 191806 b 1,600-day orbit · 12.5 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- 20 Cyg 17.4 light-years
- HIP 98692 19.2 light-years
- HIP 101611 19.3 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.