Mu Arae c

Mu Arae c / Dulcinea
Discovery
Discovered bySantos, Bouchy
Mayor, Pepe
Discovery siteLa Silla Observatory, Chile
Discovery dateAugust 25, 2004[1]
HARPS
Orbital characteristics
Apastron0.10659 AU (15.946 million km)
Periastron0.07529 AU (11.263 million km)
0.09094 AU (13.604 million km)[2]
Eccentricity0.172 ± 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-amplitude3.06 ± 0.13[2]
StarMu Arae

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.

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.

  1. ^ Cite error: The named reference eso0427 was invoked but never defined (see the help page).
  2. ^ a b c d e f Pepe, F.; Correia, A. C. M.; Mayor, M.; Tamuz, O.; et al. (2007). "The HARPS search for southern extra-solar planets. VIII. μ Arae, a system with four planets". Astronomy and Astrophysics. 462 (2): 769–776. arXiv:astro-ph/0608396. Bibcode:2007A&A...462..769P. doi:10.1051/0004-6361:20066194. S2CID 59157984.
  3. ^ "Dulcinea". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)