K2-18b
M-type red dwarf
About This Exoplanet
First exoplanet with detected water vapor in its atmosphere within the habitable zone.
Informações do Planeta
Nome do planeta
K2-18b
Estrela hospedeira
K2-18
Status
Confirmado
Nº de estrelas
1
Método de descoberta
Transit
Período orbital
33.0 dias
Raio orbital
0.1429 UA
Raio do planeta
2.61 R⊕
Massa do planeta
8.63 M⊕
Excentricidade
0.080
Raio da estrela
0.440 R☉
Temperatura estelar
3503 K
Gravidade superficial
12.6 m/s²
Planet Mass Comparison
Discovered planet vs Earth
Accuracy:
96.7%
Light Curve - Recent Candidate
TIC 441420236 - Accuracy: 96.7%
Detection Timeline
Candidates detected and confirmed in the last 24 hours
Mission Statistics
Data processed and candidates detected by space mission
Scientific Discussion
(3 comments)
The atmospheric composition data suggests this planet could have a stable climate. The orbital period is particularly interesting for potential biosignature detection.
I agree with Dr. Chen. The temperature range falls within the habitable zone parameters. We should prioritize this for JWST observation time.
Has anyone analyzed the tidal locking probability? Given the orbital period and distance from the host star, this could affect habitability significantly.