Star · K5 V
Qatar-9
Qatar-9 is a main-sequence star of spectral type K5 V in the constellation Ursa Major, 697.2 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Ursa Major |
|---|---|
| Distance | 697.2 light-years (213.8 pc) |
| Apparent magnitude | magnitude 14.02 |
| Absolute magnitude | magnitude 7.37 |
| Spectral type | K5 V |
| Surface temperature | 4,310 K |
| Luminosity | 0.151 L☉ |
| Radius | 0.696 R☉ |
| Mass | 0.719 M☉ |
| Age | 7.5 billion years |
| Metallicity [Fe/H] | 0.25 |
| Right ascension (J2000) | 10h 42m 59.5s |
| Declination (J2000) | +60° 57′ 51″ |
| Space velocity (relative to the Sun) | 32.3 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 14.02. Visible from the whole Northern Hemisphere and south to latitude 29° S. North of latitude 29° N it never sets. It stands highest at midnight in February, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1329. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 12 million years.
The Sun seen from there
From a planet around Qatar-9, the Sun would look like a star of magnitude 11.48, in the direction where our sky has the constellation Tucana. It would be invisible to the naked eye.
Planets
- Qatar-9 b 1.54-day orbit · 11.3 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.