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. 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. Since the inclination (and thus the true mass) is not known, this planet candidate may in fact be a brown dwarf.

HD 30177 b
Discovery
Discovered byTinney, Butler, Marcy et al.
Discovery siteAnglo-Australian Planet Search
Discovery dateJune 13, 2002[1]
radial velocity
Orbital characteristics
3.95 ± 0.05 AU (590,900,000 ± 7,500,000 km)
Eccentricity0.193 ± 0.025
2770 ± 100 d
2451437 ± 72
34 ± 15
Semi-amplitude146.8 ± 2.8
StarHD 30177

    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.[2][3]

    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. 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.
    3. 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.


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