Mu Arae e

Mu Arae e / Sancho
	Mu Arae e rendered by Celestia
Discovery
Discovered by	Butler, Marcy
Discovery site	California, USA
Discovery date	June 13, 2002
Detection method	Radial velocity
Orbital characteristics
Apastron	5.750 AU (860,200,000 km)
Periastron	4.719 AU (706,000,000 km)
Semi-major axis	5.235 AU (783,100,000 km)
Eccentricity	0.0985 ± 0.0627
Orbital period (sidereal)	4205.8 ± 758.9 d; 11.51 y
Time of periastron	2,450,541 ± 96
Argument of periastron	57.6 ± 43.7
Semi-amplitude	18.1 ± 1.1
Star	Mu Arae

Mu Arae e, also known as HD 160691 e, later named Sancho /ˈsæntʃoʊ/,^[2] is one of the four extrasolar planets orbiting the star Mu Arae of the constellation Ara.

Naming

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 Sancho for this planet.^[5] The winning name was submitted by the Planetario de Pamplona, Spain. Sancho was the squire of the lead character of the novel Don Quixote.^[6]

Orbit

The planet's discovery was announced on June 13, 2002. Mu Arae e is a gas giant at least 1.8 times as massive as Jupiter. The planet orbits at Jupiter-like distance at 5.235 AU.

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.
^ "Sancho". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
^ 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 2016-01-03.
^ 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.

[2] "Sancho". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)

[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 2016-01-03.

[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