MASCARA-1b is a confirmed superjovian exoplanet, orbiting the A-type star MASCARA-1 (HD 201585).
| Discovery | |
|---|---|
| Discovered by | MASCARA |
| Discovery date | 17 July 2017 |
| Orbital characteristics | |
| 0.040352 AU | |
| 2.1 d | |
| Star | MASCARA-1 |
| Physical characteristics | |
| 1.597 RJ | |
| Mass | 3.7 MJ |
| Temperature | 3062 K |
Characteristics
editMASCARA-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
edit- ^ Spi-OPS:Spitzer and CHEOPS confirm the near-polar orbit of MASCARA-1b and reveal a hint of dayside reflection, 2021, arXiv:2109.05031
- ^ Transmission spectroscopy of MASCARA-1b with ESPRESSO:Challenges of overlapping orbital and Doppler tracks, 2022, arXiv:2206.09443