DH Tauri b

DH Tauri b was discovered with the Subaru Telescope at the National Astronomical Observatory of Japan, using the direct imaging method, and its discovery was announced in 2005. It was discovered by Yoichi Itoh, Masahiko Hayashi, Motohide Tamura, Takashi Tsuji, Yumiko Oasa, Misato Fukagawa, Saeko S. Hayashi, Takahiro Naoi, Miki Ishi, Satoshi Mayama, Jun-ichi Morino, Takuya Yamashita, Tae-Soo Pyo, Takayuki Nishikawa, Tomonori Usuda, Koji Murakawa, Hiroshi Suto, Shin Oya, Naruhisa Takato, Hiroyasu Ando, Shoken M. Miyama, Naoto Kobayashi, and Norio Kaifu.

DH Tauri b has a mass 11 Jupiters, and a radius of 2.7 Jupiters, however, the radius is an approximation. The exoplanet's surface gravity is 4.0_4.5. DH Tauri b has an equilibrium temperature of 2750 Kelvin (which is 2476.85 Celsius, or 4490.33 Fahrenheit).[2][3] DH Tauri b's atmosphere contains both carbon monoxide (CO) and water (H₂O). Despite having water, the planet is uninhabitable, as it lies 320 AU away from its star, outside the habitable zone, or "Goldilocks Zone". DH Tauri b has a projected rotational velocity of around 9.6 km/s. For reference, the Earth has a rotational velocity of 0.46 km/s.[4][5][6]

DH Tauri is a type M, or red dwarf star, one of the most common types of star in the Milky Way. [7] Red dwarfs tend to be the smallest and coolest stars, and DH Tauri is no exception. It has an apparent magnitude of 13.71, meaning it's not visible from Earth using the naked eye and it has a temperature of 3840 Kelvin, which is 3566.85 Celsius (6452.33 Fahrenheit). DH Tauri has a mass of only 0.37 that of the Sun and an estimated radius of 0.4 R_☉.

• DH Tauri
• National Astronomical Observatory of Japan