Astronomy:WASP-6

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Short description: Star in the constellation Aquarius
WASP-6 / Márohu
Observation data
Equinox J2000.0]] (ICRS)
Constellation Aquarius[1]
Right ascension  23h 12m 37.73683s[2]
Declination −22° 40′ 26.2738″[2]
Apparent magnitude (V) 11.9[3]
Characteristics
Evolutionary stage Main sequence
Spectral type G8V[3]
Apparent magnitude (B) ~12.9[4]
Apparent magnitude (R) ~11.9[4]
Apparent magnitude (J) 10.769 ±0.026[4]
Apparent magnitude (H) 10.445 ±0.025[4]
Apparent magnitude (K) 10.325 ±0.025[4]
Astrometry
Radial velocity (Rv)11.84±0.89[2] km/s
Proper motion (μ) RA: −23.264(15)[2] mas/yr
Dec.: −37.143(14)[2] mas/yr
Parallax (π)5.0073 ± 0.0130[2] mas
Distance651 ± 2 ly
(199.7 ± 0.5 pc)
Details[5]
Mass0.880+0.050
−0.080 M☉
Radius0.870+0.025
−0.036 R☉
Temperature5450±100 K
Metallicity [Fe/H]−0.200±0.090 dex
Rotation23.80±0.15 d
Rotational velocity (v sin i)1.4±1.0 km/s
Age11.0+3.0
−7.0 Gyr
Other designations
Márohu, TYC 6972-75-1, 2MASS J23123773-2240261, DENIS J231237.7-224025, UCAC2 22823425[4]
Database references
SIMBADdata
Extrasolar Planets
Encyclopaedia		data

WASP-6, also officially named Márohu, is a type-G yellow dwarf star located about 651 light-years (200 parsecs) away in the Aquarius constellation. Dim at magnitude 12, it is visible through a moderate sized amateur telescope. The star is about 80% of the size and mass of the Sun and it is a little cooler.[4] Starspots in the WASP-6 system helped to refine the measurements of the mass and the radius of the planet WASP-6b.[6]

Nomenclature

The designation WASP-6 indicates that this was the 6th star found to have a planet by the Wide Angle Search for Planets.

In 2019 the IAU announced that WASP-6 and its planet WASP-6b would be given official names chosen by the public from the proposals collected in a national campaign from the Dominican Republic, as part of NameExoWorlds.[7][8] The star WASP-6 is named Márohu and its planet Boinayel from the proposal received by Marvin del Cid. Márohu, the cemí of drought, is the protector of the Sun.[9][10]

Planetary system

The SuperWASP project announced that this star has an exoplanet, WASP-6b, in 2008. This object was detected by the astronomical transit method.[3]

The WASP-6 planetary system[5]
Companion
(in order from star) 		Mass Semimajor axis
(AU) 		Orbital period
(days) 		Eccentricity Inclination Radius
b / Boinayel 0.483+0.026
−0.030 MJ 		0.04217+0.00079
−0.0012 		3.36100239(37) <0.070 88.47+0.65
−0.47° 		1.224+0.051
−0.052 RJ

See also

  • SuperWASP or WASP Planetary Search Program
  • List of extrasolar planets

References

  1. ↑ "Exoplanet Transit Database". http://var2.astro.cz/ETD/etd.php?STARNAME=WASP-6&PLANET=b. 
  2. ↑ 2.0 2.1 2.2 2.3 2.4 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940  Gaia DR3 record for this source at VizieR.
  3. ↑ 3.0 3.1 3.2 Gillon; Anderson, D. R.; Triaud, A. H. M. J.; Hellier, C.; Maxted, P. F. L.; Pollaco, D.; Queloz, D.; Smalley, B. et al. (2009). "Discovery and characterization of WASP-6b, an inflated sub-Jupiter mass planet transiting a solar-type star". Astronomy and Astrophysics 501 (2): 785–792. doi:10.1051/0004-6361/200911749. Bibcode: 2009A&A...501..785G. 
  4. ↑ 4.0 4.1 4.2 4.3 4.4 4.5 4.6 "WASP-6". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=WASP-6. 
  5. ↑ 5.0 5.1 Bonomo, A. S. et al. (June 2017). "The GAPS Programme with HARPS-N at TNG. XIV. Investigating giant planet migration history via improved eccentricity and mass determination for 231 transiting planets". Astronomy & Astrophysics 602: A107. doi:10.1051/0004-6361/201629882. Bibcode: 2017A&A...602A.107B. 
  6. ↑ Tregloan-Reed, Jeremy; Southworth, John; Burgdorf, M.; Novati, S. Calchi; Dominik, M.; Finet, F.; Jørgensen, U. G.; Maier, G. et al. (2015-06-21). "Transits and starspots in the WASP-6 planetary system" (in en). Monthly Notices of the Royal Astronomical Society 450 (2): 1760–1769. doi:10.1093/mnras/stv730. ISSN 0035-8711. Bibcode: 2015MNRAS.450.1760T. 
  7. ↑ "NameExoWorlds". 2019. http://www.nameexoworlds.iau.org/. 
  8. ↑ "Naming". 2019. https://wasp-planets.net/naming/. 
  9. ↑ "Approved names" (in en). http://www.nameexoworlds.iau.org/final-results. 
  10. ↑ "International Astronomical Union | IAU". https://www.iau.org/news/pressreleases/detail/iau1912/. 

External links

Coordinates: Sky map 23h 12m 37s, −22° 40′ 06″



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