UCAC4 328-061594 b

UCAC4 328-061594 b is a T dwarf candidate located 130 light-years away in the constellation Hydra. It is also known as CWISE J101017.43–242300.4.

 Characteristics 
UCAC4 328-061594 b has a mass 21x more massive than that of Jupiter, also by being sightly larger than Jupiter, this makes the brown dwarf very dense. It has an age similar to that of its star, but a few million years newer. Its temperature is unknown, but by being a T6-type brown dwarf, it has a temperature ranging from hotter than 600 kelvins but cooler than 1,300 kelvins.

UCAC4 328-061594 b orbits a red dwarf star. It star have a mass 1.19x larger than that of the Sun, and an age estimated to be likely 300 to 400 million years old. The star is also known as 2MASS J10104792-2427108.

UCAC4 328-061594 b has one of the largest orbits known between brown dwarfs, known to be 19,000 AU (2.8 trillion km; 1.7 trillion miles) away from its host star. It is the ninth brown dwarf with the largest orbit known, being surpassed by SDSS J134403.83+083950.9. The brown dwarf has an orbital period of 2,402,178 years.

 References 

Category:L-type brown dwarfs