HD 30177 b

HD 30177 b is an extrasolar planet located approximately 181.6 light-years away in the constellation of Dorado, orbiting the star HD 30177.

HD 30177 b
Discovery
Discovered byTinney, Butler, Marcy et al.
Discovery siteAnglo-Australian Planet Search
Discovery dateJune 13, 2002[1]
radial velocity
Orbital characteristics[2]
3.604+0.135
−0.147 AU
Eccentricity0.207+0.012
−0.017
6.884+0.014
−0.012 yr
Inclination85.393°+14.354°
−18.742°
311.232°+65.057°
−148.076°
2448895.006+28.802
−21.419 JD
25.044°+5.476°
−2.875°
Semi-amplitude128.935+2.386
−2.245 m/s
StarHD 30177
Physical characteristics[2]
Mass8.403+1.241
−0.489 MJ

    Discovery

    This planet was discovered on June 13, 2002[1] by Tinney, Butler, and Marcy et al. using the Doppler spectroscopy from the Anglo-Australian Telescope.[3][4]

    Properties

    This is one of the most massive planets ever detected by the radial velocity method. In addition, the planet orbits far from the star, about 4 AU away, taking 2770 days (7.58 years) to orbit the star. Even though the massive planet is orbiting at 4 AU from the star, the radial velocity semi-amplitude is high, around 146.8±2.8 m/s. In 2022, the inclination and true mass of HD 30177 b were measured via astrometry, showing the true mass to be close to the minimum mass.[2]

    See also

    References
    1. Tinney, Chris (2007-09-07). "AAPS Discovered Planets". Anglo-Australian Planet Search. University of New South Wales. Retrieved 2018-04-17.
    2. Feng, Fabo; Butler, R. Paul; et al. (August 2022). "3D Selection of 167 Substellar Companions to Nearby Stars". The Astrophysical Journal Supplement Series. 262 (21): 21. arXiv:2208.12720. Bibcode:2022ApJS..262...21F. doi:10.3847/1538-4365/ac7e57. S2CID 251864022.
    3. Tinney, C. G.; et al. (2003). "Four New Planets Orbiting Metal-enriched Stars". The Astrophysical Journal. 587 (1): 423–428. arXiv:astro-ph/0207128. Bibcode:2003ApJ...587..423T. doi:10.1086/368068. S2CID 10163020.
    4. Butler, R. P.; et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal. 646 (1): 505–522. arXiv:astro-ph/0607493. Bibcode:2006ApJ...646..505B. doi:10.1086/504701. S2CID 119067572.
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