Alpha Centauri Bb is an unconfirmed exoplanet that orbits around the sun. It is at only 4 light years from Earth it is the closest planet ever detected outside our solar system.
Surface temperatures on the planet are estimated to be around 1200ºC (2192ºF), which is almost three times hotter than Venus.
Alpha Centauri Bb is probably tidally locked, meaning that the same side of the planet is always facing its host star.
It is highly unlikely that any form of life could exist in the planet's harsh conditions. It is possible that other small rocky planets orbit around the habitable zone of the star but they have yet to be detected.
Erasmus+
α1 Centauri β
Light Curve
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These graphics show us the evolution of the HZ inner edge, bolometric luminosity and XUV luminosity.
In the first we can see: evolution of the inner edge of the HZ for two different assumptions: Sp = 0.9S⊕ (dashed blue line), Sp = 1.5S⊕ (full blue line). The full black line corresponds to Proxima’s measured orbital distance.
In the second we can see: evolution of the luminosity for a 0.1M⊙ star (in orange), for 0.2 M⊙ (in red) and 0.123 M⊙ (in blue). The gray area corresponds to the observed value. The black vertical dashed line corresponds to the estimated age of α1 Centauri β.
- In exoplanets.nasa.gov I have found this data:
|
PLANET TYPE
|
Super Earth |
|
DISCOVERY DATE
|
2016 |
|
MASS
|
1.27 Earths |
|
PLANET RADIUS
|
1.08 x Earth (estimate) |
|
ORBITAL RADIUS
|
0.0485 AU |
|
ORBITAL PERIOD
|
11.2 days |
|
ECCENTRICITY
|
< 0.35 |
- Using these data I've calculated the velocity of the exoplanet:
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