Mu Arae c
Extrasolar planet orbiting Mu Arae in the constellation of Ara / From Wikipedia, the free encyclopedia
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Mu Arae c, also known as HD 160691 c, formally named Dulcinea (pronounced /dʌlˈsɪniə/ or /dʌlsɪˈniːə/),[3] is an extrasolar planet orbiting the star Mu Arae of the constellation Ara. It was the first 'hot Neptune' to be discovered.
Quick Facts Discovery, Discovered by ...
Discovery | |
---|---|
Discovered by | Santos, Bouchy Mayor, Pepe |
Discovery site | La Silla Observatory, Chile |
Discovery date | August 25, 2004[1] |
HARPS | |
Orbital characteristics | |
Apastron | 0.10659 AU (15.946 million km) |
Periastron | 0.07529 AU (11.263 million km) |
0.09094 AU (13.604 million km)[2] | |
Eccentricity | 0.172 ± 0.040[2] |
9.6386 ± 0.0015[2] d 0.02639 y | |
2,452,991.1 ± 0.4[2] | |
212.7 ± 13.3[2] | |
Semi-amplitude | 3.06 ± 0.13[2] |
Star | Mu Arae |
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None of the four planets orbiting Mu Arae are directly visible from Earth using currently available tools. All four were found using the radial velocity method of extrasolar planet detection.