Star · K2III
TOI-4551
TOI-4551 is a giant star of spectral type K2III in the constellation Hydra, 710.0 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Hydra |
|---|---|
| Distance | 710.0 light-years (217.7 pc) |
| Apparent magnitude | magnitude 10.09 |
| Absolute magnitude | magnitude 3.40 |
| Spectral type | K2III |
| Surface temperature | 4,900 K |
| Luminosity | 6.35 L☉ |
| Radius | 3.55 R☉ |
| Mass | 1.31 M☉ |
| Age | 4.9 billion years |
| Metallicity [Fe/H] | 0.23 |
| Right ascension (J2000) | 12h 19m 54.9s |
| Declination (J2000) | −25° 49′ 40″ |
| Space velocity (relative to the Sun) | 57.8 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 10.09. Visible from the whole Southern Hemisphere and north to latitude 64° N. South of latitude 64° S it never sets. It stands highest at midnight in March, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1316. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 13 million years.
The Sun seen from there
From a planet around TOI-4551, the Sun would look like a star of magnitude 11.52, in the direction where our sky has the constellation Andromeda. It would be invisible to the naked eye.
Planets
- TOI-4551 b 9.96-day orbit · 11.9 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.