Star · M0.5+/-0.5 V
TOI-1801
TOI-1801 is a main-sequence star of spectral type M0.5+/-0.5 V in the constellation Leo, 100.8 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | HIP 57099 |
|---|---|
| Constellation | Leo |
| Distance | 100.8 light-years (30.9 pc) |
| Apparent magnitude | magnitude 11.58 |
| Absolute magnitude | magnitude 9.13 |
| Spectral type | M0.5+/-0.5 V |
| Surface temperature | 3,860 K |
| Luminosity | 0.0589 L☉ |
| Radius | 0.547 R☉ |
| Mass | 0.556 M☉ |
| Age | 0.7 billion years |
| Metallicity [Fe/H] | -0.19 |
| Right ascension (J2000) | 11h 42m 18.4s |
| Declination (J2000) | +23° 01′ 37″ |
| Space velocity (relative to the Sun) | 30.6 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 11.58. Visible from the whole Northern Hemisphere and south to latitude 67° S. North of latitude 67° N 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 1925. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.8 million years.
The Sun seen from there
From a planet around TOI-1801, the Sun would look like a star of magnitude 7.28, in the direction where our sky has the constellation Aquarius. It would be invisible to the naked eye.
Planets
- TOI-1801 b 10.6-day orbit · 2.08 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- 2MASSW J1155009+230706 5.16 light-years
- 2MASSW J1146345+223053 7.40 light-years
- HIP 55868 8.46 light-years
- HIP 57949 8.59 light-years
- HIP 55772 8.97 light-years
- SIMP J11430272+1905440 9.92 light-years
- HIP 56578 11.6 light-years
- HIP 58314 12.8 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.