Star · K9V
TOI-277
TOI-277 is a main-sequence star of spectral type K9V in the constellation Cetus, 211.7 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Cetus |
|---|---|
| Distance | 211.7 light-years (64.9 pc) |
| Apparent magnitude | magnitude 13.61 |
| Absolute magnitude | magnitude 9.55 |
| Spectral type | K9V |
| Surface temperature | 4,030 K |
| Luminosity | 0.0446 L☉ |
| Radius | 0.362 R☉ |
| Mass | 0.16 M☉ |
| Metallicity [Fe/H] | -0.01 |
| Right ascension (J2000) | 1h 16m 18.4s |
| Declination (J2000) | −20° 57′ 12″ |
| Space velocity (relative to the Sun) | 85.4 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.61. Visible from the whole Southern Hemisphere and north to latitude 69° N. South of latitude 69° 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 1814. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.8 million years.
The Sun seen from there
From a planet around TOI-277, the Sun would look like a star of magnitude 8.89, in the direction where our sky has the constellation Coma Berenices. It would be invisible to the naked eye.
Planets
- TOI-277 b 3.99-day orbit · 2.65 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 6427 9.44 light-years
- HIP 4815 14.0 light-years
- HIP 4376 17.6 light-years
- HIP 7158 17.8 light-years
- HIP 5651 18.8 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.