TW Hydrae is a T Tauri star approximately 196 light-years away in the constellation of Hydra. The star is the closest such star to the Solar System. TW Hydrae is about 80% of the mass of the Sun, but is only about 5-10 million years old.

Distance to Earth: 176.1 light years

B−V color index: 0.67

Luminosity (bolometric): 0.28 L_☉

U−B color index: -0.33

Evolutionary stage: Pre-main-sequence

Radial velocity (R_v): 13.40 ± 0.8 km/s