Star · M5.5+/-0.5
TOI-4184
TOI-4184 is a main-sequence star of spectral type M5.5+/-0.5 in the constellation Hydrus, 225.7 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Hydrus |
|---|---|
| Distance | 225.7 light-years (69.2 pc) |
| Apparent magnitude | magnitude 16.99 |
| Absolute magnitude | magnitude 12.79 |
| Spectral type | M5.5+/-0.5 |
| Surface temperature | 3,240 K |
| Luminosity | 0.00544 L☉ |
| Radius | 0.235 R☉ |
| Mass | 0.211 M☉ |
| Age | 6.7 billion years |
| Metallicity [Fe/H] | -0.27 |
| Right ascension (J2000) | 2h 55m 18.8s |
| Declination (J2000) | −79° 24′ 53″ |
| Space velocity (relative to the Sun) | 60.3 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 16.99. Visible from the whole Southern Hemisphere and north to latitude 11° N. South of latitude 11° S it never sets.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1800. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 4.0 million years.
The Sun seen from there
From a planet around TOI-4184, the Sun would look like a star of magnitude 9.03, in the direction where our sky has the constellation Ursa Minor. It would be invisible to the naked eye.
Planets
- TOI-4184 b 4.9-day orbit · 2.43 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 12018 11.7 light-years
- HIP 19188 13.2 light-years
- HIP 11886 15.0 light-years
- HIP 17690 16.3 light-years
- HIP 9052 18.2 light-years
- HIP 8119 18.8 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.