The Teegarden's Star System
Teegarden's Star is a planetary system in the constellation Aries hosting 3 confirmed exoplanets, about 13 light-years from Earth. 2 of its planets orbit within the habitable zone, where liquid water could exist on a planetary surface.
Teegarden's Star: Star and Habitable Zone
Teegarden's Star
- Surface temperature
- 3,034 K (Sun: 5,772 K)
- Mass
- 0.10 M☉
- Radius
- 0.12 R☉
- Luminosity
- 0.0007 L☉
Habitable zone of Teegarden's Star: 0.022–0.059 AU (conservative: 0.028–0.056 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.
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All 3 Planets in the Teegarden's Star System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| Teegarden's Star b HZ | Terrestrial | 4.9 d | — | 0.97 | 2019 |
| Teegarden's Star c HZ | Terrestrial | 11 d | — | 0.66 | 2019 |
| Teegarden's Star d | Terrestrial | 26 d | — | 0.44 | 2024 |
Discovery History
The first planet found here, Teegarden's Star b, was discovered in 2019 using the radial velocity method. The most recent addition, Teegarden's Star d, followed in 2024.
- 2019 — Teegarden's Star b (Radial Velocity)
- 2019 — Teegarden's Star c (Radial Velocity)
- 2024 — Teegarden's Star d (Radial Velocity)
Frequently Asked Questions About Teegarden's Star
How many planets does Teegarden's Star have?
Teegarden's Star has 3 confirmed exoplanets. More may await discovery.
Are any planets in the Teegarden's Star system habitable?
2 planets in the system orbit within the habitable zone, where liquid water could exist. Actual habitability depends on atmospheres and composition, which are not yet known.
How far away is Teegarden's Star?
Teegarden's Star is about 13 light-years from Earth in the constellation Aries.
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