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WASP-75

Topic: Astronomy

 From HandWiki - Reading time: 3 min
Short description: Star in the constellation Aquarius
WASP-75
Observation data
Equinox J2000.0]] (ICRS)
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[citation needed]
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[1]
Database references
SIMBADdata

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 its concentration of heavy elements.[3]

Planetary system

In 2013 a transiting hot Jupiter planet b was detected on a tight, circular orbit,[6] and the 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. ↑ 1.0 1.1 1.2 "BD-11 5929". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=BD-11+5929. 
  2. ↑ 2.0 2.1 Petigura, Erik A.; Crossfield, Ian J. M.; Isaacson, Howard; Beichman, Charles A.; Christiansen, Jessie L.; Dressing, Courtney D.; Fulton, Benjamin J.; Howard, Andrew W. et al. (2017), "Planet Candidates from K2 Campaigns 5–8 and Follow-up Optical Spectroscopy", The Astronomical Journal 155: 21, doi:10.3847/1538-3881/aa9b83 
  3. ↑ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 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, doi:10.1088/1538-3873/aaa33e, Bibcode: 2018PASP..130c4401C 
  4. ↑ 4.0 4.1 4.2 4.3 Brown, A. G. A. (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics 649: A1. doi:10.1051/0004-6361/202039657. Bibcode: 2021A&A...649A...1G.  Gaia EDR3 record for this source at VizieR.
  5. ↑ 5.0 5.1 5.2 Bonfanti, A.; Ortolani, S.; Nascimbeni, V. (2016), "Age consistency between exoplanet hosts and field stars", Astronomy & Astrophysics 585: A5, doi:10.1051/0004-6361/201527297, Bibcode: 2016A&A...585A...5B 
  6. ↑ Gómez Maqueo Chew, Y.; Faedi, F.; Pollacco, D.; Brown, D. J. A.; Doyle, A. P.; Collier Cameron, A.; Gillon, M.; Lendl, M. et al. (2013), "Discovery of WASP-65b and WASP-75b: Two hot Jupiters without highly inflated radii", Astronomy & Astrophysics 559: A36, doi:10.1051/0004-6361/201322314, Bibcode: 2013A&A...559A..36G 
  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, doi:10.1093/mnras/stz2348, Bibcode: 2019MNRAS.489.3149S 

Coordinates: Sky map 22h 49m 32.5677s, −10° 40′ 31.9275″




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