Star · K0 V
TOI-125
TOI-125 is a main-sequence star of spectral type K0 V in the constellation Hydrus, 359.9 light-years from the Sun. It is orbited by 3 confirmed exoplanet(s).
| Constellation | Hydrus |
|---|---|
| Distance | 359.9 light-years (110.3 pc) |
| Apparent magnitude | magnitude 11.10 |
| Absolute magnitude | magnitude 5.89 |
| Spectral type | K0 V |
| Surface temperature | 5,320 K |
| Luminosity | 0.519 L☉ |
| Radius | 0.848 R☉ |
| Mass | 0.859 M☉ |
| Age | 6.8 billion years |
| Metallicity [Fe/H] | -0.02 |
| Right ascension (J2000) | 1h 34m 22.7s |
| Declination (J2000) | −66° 40′ 33″ |
| Space velocity (relative to the Sun) | 90.5 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 11.10. Visible from the whole Southern Hemisphere and north to latitude 23° N. South of latitude 23° S it never sets. It stands highest at midnight in October, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1666. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 6.4 million years.
The Sun seen from there
From a planet around TOI-125, the Sun would look like a star of magnitude 10.04, in the direction where our sky has the constellation Draco. It would be invisible to the naked eye.
Planets
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.