Astronomy:MASCARA-1b

From HandWiki
Short description: Exoplanet in Equuleus
MASCARA-1b
Discovery
Discovered byMASCARA
Discovery date17 July 2017
Orbital characteristics
0.040352 AU
Orbital period2.1 d
StarMASCARA-1
Physical characteristics
Mean radius1.597 |♃|J}}}}}}
Mass3.7 ||J}}}}}}
Physics3062 K


MASCARA-1b is a confirmed superjovian exoplanet, orbiting the A-type star MASCARA-1 (HD 201585).

Characteristics

MASCARA-1b is a hot Jupiter transiting its parent A-type star; its orbit is misaligned with the star's rotation. The planet was found unusually reflective for hot Jupiter with the measured geometric albedo of 0.171+0.066−0.068 and dayside temperature of 3062+66−68 K.[1] Attempts to spectroscopically characterize its composition were failing as in 2022 due to relatively high planetary surface gravity resulting in compact atmosphere.[2]

References

  1. Spi-OPS:Spitzer and CHEOPS confirm the near-polar orbit of MASCARA-1b and reveal a hint of dayside reflection, 2021 
  2. Transmission spectroscopy of MASCARA-1b with ESPRESSO:Challenges of overlapping orbital and Doppler tracks, 2022