Mu Arae e - Misplaced Pages

Extrasolar planet in the constellation Ara

Mu Arae e / Sancho
Discovery
Mu Arae e rendered by Celestia
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/, 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. The process involved public nomination and voting for the new names. In December 2015, the IAU announced the winning name was Sancho for this planet. The winning name was submitted by the Planetario de Pamplona, Spain. Sancho was the squire of the lead character of the novel Don Quixote.

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

^ 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.

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

Constellation of Ara

Stars

Bayer	α (Choo/Tchou) β γ δ ε ε ζ (Tseen Yin) η θ ι κ λ μ (Cervantes) ν (V539) ν π ρ ρ σ
Variable	R S OY V626 V821 V828 V829 V854 V862 V872
HR	6177 6187 6207 6236 6251 6253 6297 6300 6312 6323 6408 6416 (41 G.) 6423 6438 6477 6478 6483 6487 6513 6759
HD	152079 153201 154672 154857 156411 (Inquill)
Other	2MASS J18082002−5104378 CXOU J164710.2−455216 Gliese 674 Gliese 676 IRAS 16594-4656 SAO 244567 SGR 1627−41 Westerlund 1-20 Westerlund 1 W26 Westerlund 1-75 Westerlund 1-237 Westerlund 1-243 XTE J1650−500

Exoplanets	Gliese 674 b HD 154672 b HD 154857 b c HD 156411 b μ Arae b c d e

Star
clusters

NGC	6193 6200 6204 6208 6250 6352 6362 6397
Other	ESO 280-SC06 IC 4651 Westerlund 1

Nebulae

NGC	6188 6326
Other	Stingray Nebula Water Lily Nebula

Galaxies

NGC	6215 6221 6300 6328