V830 Tauri is an M-type star located about 427 light years (131 parsecs) away from Earth in the constellation of Taurus. The star is extremely young and only has an age of around 2 million years. For comparison, the Sun is about 4.6 billion years old. The star also has an extrasolar planet orbiting it.
Characteristics[]
V830 Tauri is an M-type star, and has a mass of roughly 1 solar mass with a radius of 2 solar radii. This is due to the star's age, as it is so young it has not fully contracted yet to become a main-sequence star. It has a surface temperature of about 4250 K. The Sun's surface temperature, for comparison, is about 5772 K.
V830 Tauri is a T Tauri star, a pre-main sequence star that has a surrounding disc producing emission lines in its spectrum. It is classified as a "weak-lined" T Tauri star. It is also classified as a BY Draconis variable, which is a cool star with starspots and chromospheric activity that vary in brightness as they rotate. The variable period of 2.74 days matches the rotation period.
Planetary system[]
| Planet | Mass | Semimajor axis | Orbital period (days) | Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 0.77 Jupiter mass | 0.057 AU | 4.93 days | N/A | N/A | N/a |
On June 20, 2016, an extrasolar planet was found orbiting the star using the radial velocity method. It is the youngest extrasolar planet discovered so far, at around 2 million years old.