Star · M4+/-0.5
TOI-3984 A
TOI-3984 A is a main-sequence star of spectral type M4+/-0.5 in the constellation Boötes, 355.1 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Boötes |
|---|---|
| Distance | 355.1 light-years (108.9 pc) |
| Apparent magnitude | magnitude 15.69 |
| Absolute magnitude | magnitude 10.51 |
| Spectral type | M4+/-0.5 |
| Surface temperature | 3,480 K |
| Luminosity | 0.0267 L☉ |
| Radius | 0.47 R☉ |
| Mass | 0.49 M☉ |
| Age | 2.9 billion years |
| Metallicity [Fe/H] | 0.18 |
| Right ascension (J2000) | 15h 05m 20.9s |
| Declination (J2000) | +36° 47′ 13″ |
| Space velocity (relative to the Sun) | 33.6 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 15.69. Visible from the whole Northern Hemisphere and south to latitude 53° S. North of latitude 53° N it never sets. It stands highest at midnight in May, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1671. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 6.3 million years.
The Sun seen from there
From a planet around TOI-3984 A, the Sun would look like a star of magnitude 10.01, in the direction where our sky has the constellation Fornax. It would be invisible to the naked eye.
Planets
- TOI-3984 A b 4.35-day orbit · 7.9 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.