2MASS J034807726022270 is a brown dwarf of spectral class T7 located 27.2 light-years from the Sun

2MASS J03480777726022270 is a brown dwarf of spectral class T7 .

It is located in the constellation Reticulum approximately 27.2 light-years from the Sun .

With a rotation period of 1.08 hours , it is the fastest-rotating brown dwarf confirmed as of 2022[4 ] Its rapid rotation may enable strong auroral radio emissions via charged particle interactions in its magnetic field.

2MASS J03486022 is classified as a late T-type brown dwarf with the spectral class T7 .

It is the fastest-rotating brown dwarf confirmed as of 2022[update ] The mass, radius, age, and age of the brown dwarf are estimated by interpolation of brown dwarf evolutionary models based on effective temperature and surface gravity.

The near-infrared spectrum of a brown dwarf can be modelled by a photosphere primarily defined by two fixed intrinsic properties: effective temperature (Teff) and surface Gravity).

2MASS J03486022's brightness appears flat in the Infrared Array Camera's 3.6 m band and only exhibits discernible variability in the 4.5 m band.

Low-amplitude < 2% ) variability is common among brown dwarfs of all spectral types, and is presumed to be the result of patchy photospheres with subtle heterogeneities.

Infrared observations by the Spitzer Space Telescope show that the brown dwarf's brightness is flat.

The rotational velocity at its equator is estimated at 103.5 7.4 km/s ( 64.3 4.6 mi/s ).