WASP-75

WASP-75 is a F-type main-sequence star about 980 light-years away. The star is much younger than the Sun at approximately 2.9±0.2 billion years.[5] WASP-75 is similar to the Sun in concentration of heavy elements.[3]

WASP-75
Observation data
Epoch J2000      Equinox J2000
Constellation Aquarius
Right ascension 22h 49m 32.5677s[1]
Declination −10° 40′ 31.9275″[1]
Apparent magnitude (V) 11.299[2]
Characteristics
Evolutionary stage Main sequence
Spectral type F9[3]
Astrometry
Radial velocity (Rv)2.7±0.8[4] km/s
Proper motion (μ) RA: 45.892[4] mas/yr
Dec.: 15.428[4] mas/yr
Parallax (π)3.3387 ± 0.0202[4] mas
Distance977 ± 6 ly
(300 ± 2 pc)
Details[2]
Mass1.18 M☉
Radius1.39 R☉
Luminosity1.1±0.01[5] L☉
Surface gravity (log g)4.233 cgs
Temperature6090 K
Metallicity [Fe/H]0.07±0.09[3] dex
Rotation11.2±1.5 d[3]
Age2.9±0.2[5] Gyr
Other designations
BD−11 5929, EPIC 206154641, GSC 05816-01135, 2MASS J22493256-1040320, K2-40, Gaia EDR3 2605161444735454464[1]
Database references
SIMBADdata

Planetary system

In 2013 a transiting hot Jupiter planet b was detected on a tight, circular orbit,[6] and planet was confirmed in 2018.[3] Its equilibrium temperature is 1,688 K.[3]

The WASP-75 planetary system[7]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b 1.08±0.05[3] MJ 0.0377±0.0006[3] 2.484193 <0.1 81.96±0.02[3]° 1.31±0.02[3] RJ

References
  1. "BD-11 5929", SIMBAD, Centre de données astronomiques de Strasbourg
  2. Petigura, Erik A.; Crossfield, Ian J. M.; Isaacson, Howard; Beichman, Charles A.; Christiansen, Jessie L.; Dressing, Courtney D.; Fulton, Benjamin J.; Howard, Andrew W.; Kosiarek, Molly R.; Lépine, Sébastien; Schlieder, Joshua E.; Sinukoff, Evan; Yee, Samuel W. (2017), "Planet Candidates from K2 Campaigns 5–8 and Follow-up Optical Spectroscopy", The Astronomical Journal, 155: 21, arXiv:1711.06377, doi:10.3847/1538-3881/aa9b83, S2CID 55674757
  3. Clark, B. J. M.; Anderson, D. R.; Hellier, C.; Turner, O. D.; Močnik, T. (2018), "An Analysis of Transiting Hot Jupiters Observed with K2: WASP-55b and WASP-75b", Publications of the Astronomical Society of the Pacific, 130 (985): 034401, arXiv:1802.02132, Bibcode:2018PASP..130c4401C, doi:10.1088/1538-3873/aaa33e, S2CID 119077382
  4. Brown, A. G. A.; et al. (Gaia collaboration). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics (in press). arXiv:2012.01533. doi:10.1051/0004-6361/202039657. S2CID 227254300. Gaia EDR3 record for this source at VizieR.
  5. Bonfanti, A.; Ortolani, S.; Nascimbeni, V. (2016), "Age consistency between exoplanet hosts and field stars", Astronomy & Astrophysics, 585: A5, arXiv:1511.01744, Bibcode:2016A&A...585A...5B, doi:10.1051/0004-6361/201527297, S2CID 53971692
  6. Gómez Maqueo Chew, Y.; Faedi, F.; Pollacco, D.; Brown, D. J. A.; Doyle, A. P.; Collier Cameron, A.; Gillon, M.; Lendl, M.; Smalley, B.; Triaud, A. H. M. J.; West, R. G.; Wheatley, P. J.; Busuttil, R.; Liebig, C.; Anderson, D. R.; Armstrong, D. J.; Barros, S. C. C.; Bento, J.; Bochinski, J.; Burwitz, V.; Delrez, L.; Enoch, B.; Fumel, A.; Haswell, C. A.; Hébrard, G.; Hellier, C.; Holmes, S.; Jehin, E.; Kolb, U.; et al. (2013), "Discovery of WASP-65b and WASP-75b: Two hot Jupiters without highly inflated radii", Astronomy & Astrophysics, 559: A36, arXiv:1307.6532, Bibcode:2013A&A...559A..36G, doi:10.1051/0004-6361/201322314, S2CID 1008674
  7. Sandford, Emily; Espinoza, Néstor; Brahm, Rafael; Jordán, Andrés (2019), "Estimation of singly-transiting K2 planet periods with Gaia parallaxess", Monthly Notices of the Royal Astronomical Society, 489 (3): 3149–3161, arXiv:1908.08548, Bibcode:2019MNRAS.489.3149S, doi:10.1093/mnras/stz2348, S2CID 201645337


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