Star · K1 V
Qatar-4
Qatar-4 is a main-sequence star of spectral type K1 V in the constellation Andromeda, 1,073 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Andromeda |
|---|---|
| Distance | 1,073 light-years (329.0 pc) |
| Apparent magnitude | magnitude 13.57 |
| Absolute magnitude | magnitude 5.98 |
| Spectral type | K1 V |
| Surface temperature | 5,220 K |
| Luminosity | 0.481 L☉ |
| Radius | 0.849 R☉ |
| Mass | 0.896 M☉ |
| Age | 0.2 billion years |
| Metallicity [Fe/H] | 0.10 |
| Right ascension (J2000) | 0h 19m 26.2s |
| Declination (J2000) | +44° 01′ 39″ |
| Space velocity (relative to the Sun) | 13.9 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.57. Visible from the whole Northern Hemisphere and south to latitude 46° S. North of latitude 46° N it never sets. It stands highest at midnight in September, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 953. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 19 million years.
The Sun seen from there
From a planet around Qatar-4, the Sun would look like a star of magnitude 12.42, in the direction where our sky has the constellation Centaurus. It would be invisible to the naked eye.
Planets
- Qatar-4 b 1.81-day orbit · 12.7 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.