WASP-6

WASP-6 is a type-G yellow dwarf star located about 600 light-years 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.[5]

WASP-6
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Aquarius[1]
Right ascension 23h 12m 37.7380s[2]
Declination −22° 40′ 26.261″[2]
Apparent magnitude (V) 11.9[3]
Characteristics
Spectral type G8
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
Proper motion (μ) RA: −24.309±1.379[2] mas/yr
Dec.: −37.951±0.871[2] mas/yr
Parallax (π)5.42 ± 0.46[2] mas
Distance600 ± 50 ly
(180 ± 20 pc)
Details
Mass0.88 +0.05-0.08 M☉
Radius0.870 +0.025-0.036 R☉
Temperature5500 K
Age3 ± 1.4 billion years
Other designations
DENIS-P J231237.7-224025, 2MASS J23123773-2240261, UCAC2 22823425, Gaia DR2 2385171398768647552[4]
Database references
SIMBADdata
Extrasolar Planets
Encyclopaedia		data

Planetary system

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

Naming

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.[6][7] The star WASP-6 is named Márohu and its planet Boinayel from the proposal received by Marvin del Cid. Márohu the god of drought is the protector of the Sun.[8][9]

The WASP-6 planetary system
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
WASP-6b 0.503 (+0.019-0.038) MJ 0.0421 (−0.0013+0.0008) 3.3610060 (+0.0000022-0.0000035) 0.054 (−0.015+0.018) — —

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

References
  1. "Exoplanet Transit Database".
  2. Brown, A. G. A; et al. (2016). "Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties". Astronomy and Astrophysics. 595. A2. arXiv:1609.04172. Bibcode:2016A&A...595A...2G. doi:10.1051/0004-6361/201629512. S2CID 1828208.Gaia Data Release 1 catalog entry
  3. 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. arXiv:0901.4705. Bibcode:2009A&A...501..785G. doi:10.1051/0004-6361/200911749. S2CID 53607680.
  4. "DENIS-P J231237.7-224025 -- Star". Centre de Données astronomiques de Strasbourg. Retrieved 2009-08-20.
  5. Tregloan-Reed, Jeremy; Southworth, John; Burgdorf, M.; Novati, S. Calchi; Dominik, M.; Finet, F.; Jørgensen, U. G.; Maier, G.; Mancini, L.; Prof, S.; Ricci, D.; Snodgrass, C.; Bozza, V.; Browne, P.; Dodds, P.; Gerner, T.; Harpsøe, K.; Hinse, T. C.; Hundertmark, M.; Kains, N.; Kerins, E.; Liebig, C.; Penny, M. T.; Rahvar, S.; Sahu, K.; Scarpetta, G.; Schäfer, S.; Schönebeck, F.; Skottfelt, J.; Surdej, J. (2015-06-21). "Transits and starspots in the WASP-6 planetary system". Monthly Notices of the Royal Astronomical Society. 450 (2): 1760–1769. doi:10.1093/mnras/stv730. ISSN 0035-8711.
  6. "NameExoWorlds". 2019. Retrieved 6 September 2019.
  7. "Naming". 2019. Retrieved 6 September 2019.
  8. "Approved names". NameExoworlds. Retrieved 2020-01-02.
  9. "International Astronomical Union | IAU". www.iau.org. Retrieved 2020-01-02.

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