Star · K1V
K2-291
K2-291 is a main-sequence star of spectral type K1V in the constellation Taurus, 292.0 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Taurus |
|---|---|
| Distance | 292.0 light-years (89.5 pc) |
| Apparent magnitude | magnitude 10.11 |
| Absolute magnitude | magnitude 5.35 |
| Spectral type | K1V |
| Surface temperature | 5,520 K |
| Luminosity | 0.682 L☉ |
| Radius | 0.899 R☉ |
| Mass | 0.934 M☉ |
| Age | 3.7 billion years |
| Metallicity [Fe/H] | 0.08 |
| Right ascension (J2000) | 5h 05m 47.0s |
| Declination (J2000) | +21° 32′ 55″ |
| Space velocity (relative to the Sun) | 49.9 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 10.11. Visible from the whole Northern Hemisphere and south to latitude 68° S. North of latitude 68° N it never sets. It stands highest at midnight in December, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1734. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 5.2 million years.
The Sun seen from there
From a planet around K2-291, the Sun would look like a star of magnitude 9.59, in the direction where our sky has the constellation Ophiuchus. It would be invisible to the naked eye.
Planets
- K2-291 b 2.23-day orbit · 1.59 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 23854 9.13 light-years
- HIP 24665 18.7 light-years
- HIP 24480 19.2 light-years
- HIP 24298 19.3 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.