Astrophysics (Index)About

TW Hydrae

(TW Hya)
(nearest T-Tauri star)

TW Hydrae (TW Hya) is the nearest T-Tauri star to the Sun, and is the star for which TW Hydrae association is named. It has a face-on protoplanetary disk, that has a gap suggesting a likely extra-solar planet, which would be TW Hydrae b, with a mass of up to about 1.5 Neptune masses, i.e., roughly 25 Earth masses. (A discounted study had theorized a more massive planet based on other arguments.) Characteristics:

(star,TTS,PMS star,variable star,exoplanets)
Further reading:
/Lookback Years
~060pc196lyTW Hydrae
Coordinates:TW Hya

Referenced by pages:
K-type star (K)
TW Hydrae association (TWA)