Teegarden's Star

Teegarden's Star is a dim, M-type red dwarf located in the constellation Aries, only 12.5 light-years from Earth. It is one of the smallest and coolest stars known, about 9% the mass of the Sun and with a temperature of around 2,900 K. Despite its proximity, it is so faint (magnitude 15) that it can only be seen through large telescopes. Discovered in 2003, it hosts a planetary system with at least three planets, two of which orbit within the star's habitable zone and are among the closest known potentially habitable exoplanets. Teegarden's Star is unusually quiet for a red dwarf, making it a promising target in the search for extraterrestrial life.

NASA - Teegarden's Star

Type

Star

Class: Red dwarf
Spectral class: M7 V
Location:

Right ascension: 2h 53m 4.715s

Declination: 16° 51' 51.746'' (equatorial region)

Parallax: 260.988

Distance to the Sun: 12.497 ly | 3.8pc

Basic characteristic

Mass: 9.7 % M Sun | 102 M Jupiter

Size: 12 % R Sun | 1.2 R Jupiter

Temperature: 3034 K | 0.53 T Sun

Age: 8 billions years | 1.74 Sun

Luminosity: 0.00073 L Sun

Photometry

Apparent magnitude (V):15.1

Absolute magnitude (V):17.2