Mu Arae

Mu Arae / Cervantes
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Ara
Right ascension 17h 44m 08.70314s[1]
Declination −51° 50′ 02.5916″[1]
Apparent magnitude (V) 5.15[2]
Characteristics
Spectral type G3IV–V[3]
Apparent magnitude (V) 5.15±0.01[2]
Apparent magnitude (G) 4.943±0.003[1]
Apparent magnitude (K) 3.68±0.25[2]
U−B color index +0.24[4]
B−V color index +0.70[4]
Astrometry
Radial velocity (Rv)−9.54±0.13[1] km/s
Proper motion (μ) RA: −15.034±0.084 mas/yr[1]
Dec.: −190.901±0.065 mas/yr[1]
Parallax (π)64.0853 ± 0.0904 mas[1]
Distance50.89 ± 0.07 ly
(15.60 ± 0.02 pc)
Absolute magnitude (MV)+4.17[5]
Details
Mass1.10±0.01[6] M☉
Radius1.36±0.01[6] R☉
Luminosity1.90±0.10[6] L☉
Surface gravity (log g)4.2±0.1[2] cgs
Temperature5,820±40[6] K
Metallicity200±5%[6][note 1]
Metallicity [Fe/H]0.30±0.01[6] dex
Rotational velocity (v sin i)3.1±0.5[2] km/s
Age6.34±0.40[6] Gyr
Other designations
Cervantes, CD−51°11094, FK5 662, GC 24024, GJ 691, HD 160691, HIP 86796, HR 6585, SAO 244981
Database references
SIMBADdata
Exoplanet Archivedata
ARICNSdata

Mu Arae (μ Arae, abbreviated Mu Ara, μ Ara), often designated HD 160691, officially named Cervantes /sɜːrˈvæntiːz/ sur-VAN-teez,[7] is a main sequence G-type star approximately 50 light-years away from the Sun in the constellation of Ara. The star has a planetary system with four known extrasolar planets (designated Mu Arae b, c, d and e; later named Quijote, Dulcinea, Rocinante and Sancho, respectively), three of them with masses comparable with that of Jupiter. Mu Arae c, the innermost, was the first hot Neptune or super-Earth discovered.

  1. ^ a b c d e f Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
  2. ^ a b c d e Cite error: The named reference Benedict2022 was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference aj132_1_161 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference ibsh8_30 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  6. ^ a b c d e f g Soriano, M.; Vauclair, S. (2009). "New seismic analysis of the exoplanet-host star Mu Arae". Astronomy and Astrophysics. 513: A49. arXiv:0903.5475. Bibcode:2010A&A...513A..49S. doi:10.1051/0004-6361/200911862. S2CID 5688996.
  7. ^ "IAU Catalog of Star Names". Retrieved 28 July 2016.


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