HR 2562 b

HR 2562b is a substellar companion of debris disk host star HR 2562.[1] Initially categorised as brown dwarf, its exact mass is unknown, and is thought to be 30 ± 15 Jupiter masses,[1] and its luminosity is about two one-thousandths of a percent of a solar luminosity.[1][note 1] If classified as a brown dwarf, its spectral type would be L7±3.[1] It was first observed in 2016 using the Gemini Planet Imager.

HR 2562 b
Discovery
Discovered byQ. Konopacky et al.[1]
Discovery date23 August 2016
Direct imaging
Orbital characteristics
20.3 ± 0.3 AU (3.037×109 ± 45,000,000 km)[1]
StarHR 2562
Physical characteristics
Mean radius
1.11 ± 0.11[1] RJ
Mass30 ± 15[1] MJ
log(g) = 4.70 ± 0.32[1] m/s²
Temperature1200 ± 100 K[1]

    According to NASA Exoplanet Archive, with a mass of 30 MJ, it is listed as the most massive planet.[2]

    References
    1. Konopacky, Quinn M.; Rameau, Julien; Duchêne, Gaspard; Filippazzo, Joseph C.; Godfrey, Paige A. Giorla; Marois, Christian; Nielsen, Eric L.; Pueyo, Laurent; Rafikov, Roman R. (2016). "Discovery of a Substellar Companion to the Nearby Debris Disk Host HR 2562". The Astrophysical Journal Letters. 829 (1): L4. arXiv:1608.06660. Bibcode:2016ApJ...829L...4K. doi:10.3847/2041-8205/829/1/L4. ISSN 2041-8205.
    2. https://exoplanetarchive.ipac.caltech.edu/cgi-bin/TblView/nph-tblView?app=ExoTbls&config=planets

    Notes
    1. The luminosity of HR 2562 b is log(L/L☉) = −4.62 ± 0.12.[1]


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