Mu Arae c
Mu Arae c, also known as HD 160691 c, formally named Dulcinea (pronounced /dʌlˈsɪniə/ or /dʌlsɪˈniːə/), is an extrasolar planet orbiting the star Mu Arae of the constellation Ara. It was the first 'hot Neptune' to be discovered.
| Discovery | |
|---|---|
| Discovered by | Santos, Bouchy Mayor, Pepe |
| Discovery site | La Silla Observatory, Chile |
| Discovery date | August 25, 2004 |
| 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) | |
| Eccentricity | 0.172 ± 0.040 |
| 9.6386 ± 0.0015 d 0.02639 y | |
| 2,452,991.1 ± 0.4 | |
| 212.7 ± 13.3 | |
| Semi-amplitude | 3.06 ± 0.13 |
| Star | Mu Arae |
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.
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