HD 93083 b

HD 93083 b is an extrasolar planet orbiting the K-type subgiant star HD 93083 in Antlia constellation. It is probably much less massive than Jupiter, although only the minimum mass is known. The planet's mean distance from the star is about half that of Earth, and the orbit is slightly eccentric. This planet is another discovery by the HARPS search team.[2]

HD 93083 b [1]
Discovery
Discovered byLovis et al.[2]
Discovery siteLa Silla Observatory, Chile
Discovery date14 February 2005
Radial Velocity
Orbital characteristics
Apastron0.544 AU (81,400,000 km)
Periastron0.410 AU (61,300,000 km)
0.477 AU (71,400,000 km)
Eccentricity0.14 ± 0.03
143.58 ± 0.6 d
0.3931 y
36.3
2,453,181.7 ± 3.0
333.5 ± 7.9
Semi-amplitude18.30 ± 0.5
StarHD 93083
Physical characteristics
Mass>0.37 MJ
(>118 M⊕)

    The planet HD 93083 b is named Melquíades. The name was selected in the NameExoWorlds campaign by Colombia, during the 100th anniversary of the IAU. Melquíades is a fictional character in the novel One Hundred Years of Solitude that walks around Macondo (name of the host star HD 93083).[3][4]

    Stability analysis reveals that the orbits of Earth-sized planets located in HD 93083 b's Trojan points would be stable for long periods of time.[5]

    See also

    References
    1. "HD 93083 b". Geneva Observatory. Retrieved 2008-10-03.
    2. Lovis, C.; et al. (2005). "The HARPS search for southern extra-solar planets III. Three Saturn-mass planets around HD 93083, HD 101930 and HD 102117". Astronomy and Astrophysics. 437 (3): 1121–1126. arXiv:astro-ph/0503660. Bibcode:2005A&A...437.1121L. doi:10.1051/0004-6361:20052864.
    3. "Approved names". NameExoworlds. Retrieved 2020-01-02.
    4. "International Astronomical Union | IAU". www.iau.org. Retrieved 2020-01-02.
    5. Schwarz; Dvorak, R.; Süli, Á.; Érdi, B. (2007). "Survey of the stability region of hypothetical habitable Trojan planets" (PDF). Astronomy and Astrophysics. 474 (3): 1023–1029. Bibcode:2007A&A...474.1023S. doi:10.1051/0004-6361:20077994.



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