Exoplanet · Earth-sized rocky planet
Teegarden's Star b
Teegarden's Star b is a Earth-sized rocky planet orbiting the star Teegarden's Star. Its year lasts 4.91 Earth days. It was discovered in 2019 by the Radial Velocity method.
| Host star | Teegarden's Star |
|---|---|
| Distance | 12.5 light-years (3.83 pc) |
| Orbital period | 4.91 days |
| Orbital radius | 0.0259 AU |
| Eccentricity | 0.030 |
| Radius | 1.05 R⊕ · 0.0937 R♃ |
| Mass (minimum) | 1.16 M⊕ · 0.00365 M♃ |
| Density | 5.51 g/cm³ |
| Equilibrium temperature | 277 K (4 °C) |
| Stellar flux received | 1.08 × Earth |
| Discovery method | Radial Velocity |
| Discovery year | 2019 |
| Discovered by | Calar Alto Observatory |
Habitable zone
At the edge of the habitable zone (within the optimistic limits): liquid water would be possible only with a favourable atmosphere.
Its star in the sky
In the planet's sky its star is a disc 2.5° across: 4.6 times the Sun as we see it from Earth.
In the sky
A telescope is needed to see it: its apparent magnitude is 15.29. Visible from the whole Northern Hemisphere and south to latitude 73° S. North of latitude 73° N it never sets. It stands highest at midnight in November, the best time to observe it.
Light's journey
The light you see tonight set out around the year 2014. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 222 thousand years.
Planets in the same system
- Teegarden's Star c 11.4-day orbit · 1.02 R⊕
- Teegarden's Star d 26.1-day orbit · 0.954 R⊕
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.