Aldebaran b

Aldebaran b
Discovery
Discovery date1993 (dubious)
May 15, 2015 (confirmed)
2019 (dubious, again)
Radial velocity
Orbital characteristics
Apastron1.606 +0.2105
−0.2375 AU
Periastron1.314 +0.3295
−0.3025 AU
1.46 ± 0.27 AU (218,000,000 ± 40,000,000 km)
Eccentricity0.1 ± 0.05
628.96 ± 0.9 d
1999/04/28 ± 50
287 ± 29
StarAldebaran
Physical characteristics
Mass>5.8±0.7[1] MJ
Temperature1,500 K (1,230 °C; 2,240 °F)

Aldebaran b is a candidate exoplanet orbiting the orange giant star Aldebaran, 65 light-years away. It was initially detected in 1993, but was considered doubtful until 2015, when researchers came to a conclusion that there is likely an exoplanet orbiting Aldebaran, consistent with the original calculations, but also compatible with stellar activity.[2] However, in 2019, new data placed doubts on its existence again.[3]

  1. ^ Farr, W. (2018). "Aldebaran b's temperate past uncovered in planet search data". The Astrophysical Journal. 865 (2): L20. arXiv:1802.09812. Bibcode:2018ApJ...865L..20F. doi:10.3847/2041-8213/aadfde. S2CID 56049041.
  2. ^ Hatzes, A.P.; et al. (May 15, 2015). "Long-lived, long-period radial velocity variations in Aldebaran: A planetary companion and stellar activity". Astronomy & Astrophysics. 580: 18. arXiv:1505.03454. Bibcode:2015yCat..35800031H. doi:10.1051/0004-6361/201425519. S2CID 53324086.
  3. ^ Cite error: The named reference Reichert2019 was invoked but never defined (see the help page).