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Star in the constellation Aquarius From Wikipedia, the free encyclopedia
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]
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
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) mas/yr[2] Dec.: −37.143(14) mas/yr[2] |
Parallax (π) | 5.0073 ± 0.0130 mas[2] |
Distance | 651 ± 2 ly (199.7 ± 0.5 pc) |
Details[5] | |
Mass | 0.880+0.050 −0.080 M☉ |
Radius | 0.870+0.025 −0.036 R☉ |
Temperature | 5450±100 K |
Metallicity [Fe/H] | −0.200±0.090 dex |
Rotation | 23.80±0.15 d |
Rotational velocity (v sin i) | 1.4±1.0 km/s |
Age | 11.0+3.0 −7.0 Gyr |
Other designations | |
Database references | |
SIMBAD | data |
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]
The SuperWASP project announced that this star has an exoplanet, WASP-6b, in 2008. This object was detected by the astronomical transit method.[3]
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 |
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