Star · G2V
TOI-128
TOI-128 is a main-sequence star of spectral type G2V in the constellation Mensa, 222.5 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | HIP 24718 |
|---|---|
| Constellation | Mensa |
| Distance | 222.5 light-years (68.2 pc) |
| Apparent magnitude | magnitude 8.44 |
| Absolute magnitude | magnitude 4.27 |
| Spectral type | G2V |
| Surface temperature | 6,090 K |
| Luminosity | 1.54 L☉ |
| Radius | 1.13 R☉ |
| Mass | 0.852 M☉ |
| Right ascension (J2000) | 5h 18m 05.4s |
| Declination (J2000) | −80° 57′ 52″ |
| Space velocity (relative to the Sun) | 24.2 km/s |
In the sky
Too faint for the naked eye (magnitude 8.44); binoculars will find it. Visible from the whole Southern Hemisphere and north to latitude 9° N. South of latitude 9° S it never sets.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1803. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.9 million years.
The Sun seen from there
From a planet around TOI-128, the Sun would look like a star of magnitude 9.00, in the direction where our sky has the constellation Ursa Minor. It would be invisible to the naked eye.
Planets
- TOI-128.01 4.94-day orbit · 2.22 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 28525 8.15 light-years
- HIP 19188 12.0 light-years
- HIP 22651 12.2 light-years
- HIP 24722 15.9 light-years
- HIP 20612 19.1 light-years
- HIP 20610 19.3 light-years
- HIP 22295 19.3 light-years
- HIP 30179 19.7 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.