Star · G4V
Kepler-561
Kepler-561 is a main-sequence star of spectral type G4V in the constellation Cygnus, 2,027 light-years from the Sun. It is orbited by 2 confirmed exoplanet(s).
| Constellation | Cygnus |
|---|---|
| Distance | 2,027 light-years (621.4 pc) |
| Apparent magnitude | magnitude 14.43 |
| Absolute magnitude | magnitude 5.46 |
| Spectral type | G4V |
| Surface temperature | 5,650 K |
| Luminosity | 0.661 L☉ |
| Radius | 0.94 R☉ |
| Mass | 0.96 M☉ |
| Age | 4.3 billion years |
| Metallicity [Fe/H] | 0.02 |
| Right ascension (J2000) | 19h 34m 59.3s |
| Declination (J2000) | +45° 06′ 26″ |
| Space velocity (relative to the Sun) | 13.1 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 14.43. Visible from the whole Northern Hemisphere and south to latitude 45° S. North of latitude 45° 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 2 BC. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 36 million years.
The Sun seen from there
From a planet around Kepler-561, the Sun would look like a star of magnitude 13.80, in the direction where our sky has the constellation Puppis. It would be invisible to the naked eye.
Planets
- Kepler-561 c 5.35-day orbit · 2.68 R⊕
- Kepler-561 b 58.4-day orbit · 6.96 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.