Teegarden's Star
Star System
Teegarden's Star is a tiny ultracool red dwarf 12.5 light-years away in Aries, so faint it was overlooked until 2003. Despite its feeble light it hosts three confirmed planets, two in the temperate zone.
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Key facts
Type
Ultracool red dwarf (M7V)
Distance
12.50 light-years
Confirmed planets
3
Science
Classification
- Type
- Single ultracool red-dwarf system
- Central star
- Teegarden's Star — M7V (~3030 K, ~0.10 M☉)
Planets
- Confirmed planets
- 3 (b, c temperate; d cooler)
- Masses
- Radial-velocity minimum masses ~0.8-1.2 Earth
- no transits — true masses and radii are not measured
Distance
- Distance
- 12.50 light-years
How we know
- Note
- Three confirmed planets (radial-velocity minimum masses; radii unmeasured); b and c are among the more promising nearby temperate worlds. Real distance 12.50 light-years.
Discovery & history
- Method
- Telescope
- Name
- Named for the astrophysicist Bonnard J. Teegarden.
Discovered in 2003 by Bonnard Teegarden's team from archival survey images; its planets were found by CARMENES from 2019.
Images
Images from open archives · credit shown per image