Star · G8
HD 202772 A
HD 202772 A is a main-sequence star of spectral type G8 in the constellation Capricornus, 531.5 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Capricornus |
|---|---|
| Distance | 531.5 light-years (163.0 pc) |
| Apparent magnitude | magnitude 8.39 |
| Absolute magnitude | magnitude 2.33 |
| Spectral type | G8 |
| Surface temperature | 6,440 K |
| Luminosity | 10.2 L☉ |
| Radius | 2.55 R☉ |
| Mass | 1.72 M☉ |
| Age | 1.6 billion years |
| Metallicity [Fe/H] | 0.23 |
| Right ascension (J2000) | 21h 18m 47.9s |
| Declination (J2000) | −26° 36′ 58″ |
| Space velocity (relative to the Sun) | 48.0 km/s |
In the sky
Too faint for the naked eye (magnitude 8.39); binoculars will find it. Visible from the whole Southern Hemisphere and north to latitude 63° N. South of latitude 63° S it never sets. It stands highest at midnight in August, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1495. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 9.4 million years.
The Sun seen from there
From a planet around HD 202772 A, the Sun would look like a star of magnitude 10.89, in the direction where our sky has the constellation Cancer. It would be invisible to the naked eye.
Planets
- HD 202772 A b 3.31-day orbit · 18.2 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.