Star · M4.0+/-0.5
TOI-6478
TOI-6478 is a main-sequence star of spectral type M4.0+/-0.5 in the constellation Hydra, 125.9 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Hydra |
|---|---|
| Distance | 125.9 light-years (38.6 pc) |
| Apparent magnitude | magnitude 15.65 |
| Absolute magnitude | magnitude 12.72 |
| Spectral type | M4.0+/-0.5 |
| Surface temperature | 3,230 K |
| Luminosity | 0.00572 L☉ |
| Radius | 0.234 R☉ |
| Mass | 0.23 M☉ |
| Age | 6.0 billion years |
| Metallicity [Fe/H] | -0.53 |
| Right ascension (J2000) | 9h 59m 58.0s |
| Declination (J2000) | −16° 09′ 35″ |
| Space velocity (relative to the Sun) | 32.9 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 15.65. Visible from the whole Southern Hemisphere and north to latitude 74° N. South of latitude 74° S it never sets. It stands highest at midnight in February, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1900. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.2 million years.
The Sun seen from there
From a planet around TOI-6478, the Sun would look like a star of magnitude 7.76, in the direction where our sky has the constellation Pegasus. It would be invisible to the naked eye.
Planets
- TOI-6478 b 34-day orbit · 4.6 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.