Star · F4 V
Qatar-7
Qatar-7 is a main-sequence star of spectral type F4 V in the constellation Andromeda, 2,303 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Andromeda |
|---|---|
| Distance | 2,303 light-years (706.0 pc) |
| Apparent magnitude | magnitude 13.13 |
| Absolute magnitude | magnitude 3.89 |
| Spectral type | F4 V |
| Surface temperature | 6,390 K |
| Luminosity | 3.66 L☉ |
| Radius | 1.56 R☉ |
| Mass | 1.41 M☉ |
| Age | 1.7 billion years |
| Metallicity [Fe/H] | 0.28 |
| Right ascension (J2000) | 23h 54m 03.6s |
| Declination (J2000) | +37° 01′ 19″ |
| Space velocity (relative to the Sun) | 17.8 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.13. Visible from the whole Northern Hemisphere and south to latitude 53° S. North of latitude 53° 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 278 BC. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 41 million years.
The Sun seen from there
From a planet around Qatar-7, the Sun would look like a star of magnitude 14.07, in the direction where our sky has the constellation Centaurus. It would be invisible to the naked eye.
Planets
- Qatar-7 b 2.03-day orbit · 19.1 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.