Star · G9 V
TOI-421
TOI-421 is a main-sequence star of spectral type G9 V in the constellation Lepus, 244.6 light-years from the Sun. It is orbited by 2 confirmed exoplanet(s).
| Constellation | Lepus |
|---|---|
| Distance | 244.6 light-years (75.0 pc) |
| Apparent magnitude | magnitude 10.02 |
| Absolute magnitude | magnitude 5.64 |
| Spectral type | G9 V |
| Surface temperature | 5,290 K |
| Luminosity | 0.54 L☉ |
| Radius | 0.866 R☉ |
| Mass | 0.833 M☉ |
| Age | 10.9 billion years |
| Metallicity [Fe/H] | -0.04 |
| Right ascension (J2000) | 5h 27m 24.8s |
| Declination (J2000) | −14° 16′ 37″ |
| Space velocity (relative to the Sun) | 82.4 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 10.02. Visible from the whole Southern Hemisphere and north to latitude 76° N. South of latitude 76° S 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 1781. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 4.3 million years.
The Sun seen from there
From a planet around TOI-421, the Sun would look like a star of magnitude 9.21, in the direction where our sky has the constellation Hercules. It would be invisible to the naked eye.
Planets
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 25922 16.2 light-years
- HIP 25280 18.7 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.