Mu Arae d

Mu Arae d / Rocinante
Discovery
Discovered by	Goździewski et al. ; Mayor, Pepe
Discovery site	Chile South America
Discovery date	August 5, 2006
Detection method	Doppler Spectroscopy
Orbital characteristics
Apastron	0.9823 AU (146,950,000 km)
Periastron	0.8597 AU (128,610,000 km)
Semi-major axis	0.9210 AU (137,780,000 km)
Eccentricity	0.0666 ± 0.0122
Orbital period (sidereal)	310.55 ± 0.83 d; 0.8502 y
Time of periastron	2452708.7 ± 8.3
Argument of periastron	189.6 ± 9.4
Semi-amplitude	14.91 ± 0.59
Star	Mu Arae

Mu Arae d, also known as HD 160691 d, formally named Rocinante /ˌrɒsəˈnæntiː/, is an extrasolar planet orbiting the star Mu Arae of the constellation Ara.

Characteristics

The planet has a mass about half that of Jupiter and orbits at a distance of 0.921 AU from the star with a period of 310.55 days. The planet may be located at a distance close enough to the star to receive a comparable amount of ultraviolet radiation as the Earth does from the Sun. However, it is too close to the star to be able to support liquid water at its surface.^[2] Furthermore, given its mass, the planet is likely to be a gas giant with no solid surface.

Name

In July 2014 the International Astronomical Union launched NameExoWorlds, a process for giving proper names to certain exoplanets and their host stars.^[3] The process involved public nomination and voting for the new names.^[4] In December 2015, the IAU announced the winning name was Rocinante for this planet.^[5] The winning name was submitted by the Planetario de Pamplona, Spain. Rocinante was the horse of the lead character of the novel Don Quixote.^[6]

References

^ ^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.
^ Buccino, A.; et al. (2006). "Ultraviolet Radiation Constraints around the Circumstellar Habitable Zones". Icarus. 183 (2): 491–503. arXiv:astro-ph/0512291. Bibcode:2006Icar..183..491B. doi:10.1016/j.icarus.2006.03.007. S2CID 2241081.
^ NameExoWorlds: An IAU Worldwide Contest to Name Exoplanets and their Host Stars. IAU.org. 9 July 2014
^ "NameExoWorlds The Process". Archived from the original on 2015-08-15. Retrieved 2015-09-05.
^ Final Results of NameExoWorlds Public Vote Released, International Astronomical Union, 15 December 2015.
^ "NameExoWorlds The Approved Names". Archived from the original on 2018-02-01. Retrieved 2016-01-03.

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[pepe07-1] ^ ^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.

[buccino-2] Buccino, A.; et al. (2006). "Ultraviolet Radiation Constraints around the Circumstellar Habitable Zones". Icarus. 183 (2): 491–503. arXiv:astro-ph/0512291. Bibcode:2006Icar..183..491B. doi:10.1016/j.icarus.2006.03.007. S2CID 2241081.

[3] NameExoWorlds: An IAU Worldwide Contest to Name Exoplanets and their Host Stars. IAU.org. 9 July 2014

[4] "NameExoWorlds The Process". Archived from the original on 2015-08-15. Retrieved 2015-09-05.

[5] Final Results of NameExoWorlds Public Vote Released, International Astronomical Union, 15 December 2015.

[6] "NameExoWorlds The Approved Names". Archived from the original on 2018-02-01. Retrieved 2016-01-03.

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v t e The Mu Arae System
Stars	Mu Arae
Planets	Mu Arae c Mu Arae d Mu Arae b Mu Arae e