Star · K4V
Kepler-661
Kepler-661 is a main-sequence star of spectral type K4V in the constellation Draco, 1,744 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Draco |
|---|---|
| Distance | 1,744 light-years (534.8 pc) |
| Apparent magnitude | magnitude 16.02 |
| Absolute magnitude | magnitude 7.38 |
| Spectral type | K4V |
| Surface temperature | 4,480 K |
| Luminosity | 0.153 L☉ |
| Radius | 0.67 R☉ |
| Mass | 0.7 M☉ |
| Age | 4.3 billion years |
| Metallicity [Fe/H] | -0.05 |
| Right ascension (J2000) | 18h 54m 50.6s |
| Declination (J2000) | +47° 51′ 47″ |
| Space velocity (relative to the Sun) | 72.4 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 16.02. Visible from the whole Northern Hemisphere and south to latitude 42° S. North of latitude 42° 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 the year 282. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 31 million years.
The Sun seen from there
From a planet around Kepler-661, the Sun would look like a star of magnitude 13.47, in the direction where our sky has the constellation Puppis. It would be invisible to the naked eye.
Planets
- Kepler-661 b 6.03-day orbit · 3.07 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.