Star · F8
TOI-261
TOI-261 is a main-sequence star of spectral type F8 in the constellation Cetus, 370.6 light-years from the Sun. It is orbited by 2 confirmed exoplanet(s).
| Other names | HIP 4739 |
|---|---|
| Constellation | Cetus |
| Distance | 370.6 light-years (113.6 pc) |
| Apparent magnitude | magnitude 9.56 |
| Absolute magnitude | magnitude 4.28 |
| Spectral type | F8 |
| Surface temperature | 5,890 K |
| Luminosity | 1.78 L☉ |
| Radius | 1.31 R☉ |
| Mass | 1.07 M☉ |
| Metallicity [Fe/H] | -0.35 |
| Right ascension (J2000) | 1h 00m 52.2s |
| Declination (J2000) | −24° 25′ 26″ |
| Space velocity (relative to the Sun) | 58.8 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 9.56. Visible from the whole Southern Hemisphere and north to latitude 66° N. South of latitude 66° 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 1655. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 6.6 million years.
The Sun seen from there
From a planet around TOI-261, the Sun would look like a star of magnitude 10.11, in the direction where our sky has the constellation Coma Berenices. It would be invisible to the naked eye.
Planets
- TOI-261.01 3.36-day orbit · 3.04 R⊕
- TOI-261.02 13-day orbit · 3.35 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.