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 |
Nomenclature
editThe 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
editThe 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 |
See also
edit- SuperWASP or WASP Planetary Search Program
- List of extrasolar planets
References
edit- ^ "Exoplanet Transit Database".
- ^ a b c d e Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ^ a b c 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.
- ^ a b c d e f g "WASP-6". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 10 December 2023.
- ^ a b Bonomo, A. S.; Desidera, 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. arXiv:1704.00373. Bibcode:2017A&A...602A.107B. doi:10.1051/0004-6361/201629882.
- ^ 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. arXiv:1503.09184. Bibcode:2015MNRAS.450.1760T. doi:10.1093/mnras/stv730. ISSN 0035-8711.
- ^ "NameExoWorlds". 2019. Retrieved 6 September 2019.
- ^ "Naming". 2019. Retrieved 6 September 2019.
- ^ "Approved names". NameExoworlds. Retrieved 2020-01-02.
- ^ "International Astronomical Union | IAU". www.iau.org. Retrieved 2020-01-02.
External links
edit
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