Star · K0
TOI-251
TOI-251 is a main-sequence star of spectral type K0 in the constellation Sculptor, 329.4 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Sculptor |
|---|---|
| Distance | 329.4 light-years (101.0 pc) |
| Apparent magnitude | magnitude 9.96 |
| Absolute magnitude | magnitude 4.94 |
| Spectral type | K0 |
| Surface temperature | 5,880 K |
| Luminosity | 0.831 L☉ |
| Radius | 0.881 R☉ |
| Mass | 1.04 M☉ |
| Age | 0.2 billion years |
| Metallicity [Fe/H] | -0.11 |
| Right ascension (J2000) | 23h 32m 14.8s |
| Declination (J2000) | −37° 15′ 21″ |
| Space velocity (relative to the Sun) | 21.5 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 9.96. Visible from the whole Southern Hemisphere and north to latitude 53° N. South of latitude 53° S 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 the year 1697. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 5.8 million years.
The Sun seen from there
From a planet around TOI-251, the Sun would look like a star of magnitude 9.85, in the direction where our sky has the constellation Ursa Major. It would be invisible to the naked eye.
Planets
- TOI-251 b 4.94-day orbit · 2.74 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.