WASP-52

WASP-52 / Anadolu
Observation data
Epoch J2000      Equinox J2000
Constellation Pegasus
Right ascension 23h 13m 58.7576s[1]
Declination 08° 45′ 40.5713″[1]
Apparent magnitude (V) 12.0
Characteristics
Evolutionary stage Main sequence
Spectral type K2V[2]
Astrometry
Radial velocity (Rv)−26.604[1] km/s
Proper motion (μ) RA: −6.942[1] mas/yr
Dec.: −44.330[1] mas/yr
Parallax (π)5.7262 ± 0.0134 mas[1]
Distance570 ± 1 ly
(174.6 ± 0.4 pc)
Details[3]
Mass0.87±0.03 M☉
Radius0.79±0.02 R☉
Surface gravity (log g)4.58±0.01[4] cgs
Temperature5,000±100 K
Metallicity [Fe/H]0.03±0.12 dex
Rotation16±2 d[4]
Rotational velocity (v sin i)1.77+0.19
−0.20[5] km/s
Age10.7+1.9
−4.5 Gyr
Other designations
Anadolu, Gaia EDR3 2666015878575546496, 2MASS J23135873+0845405[2]
Database references
SIMBADdata

WASP-52 is a K-type main-sequence star about 570 light-years away. It is older than the Sun at 10.7+1.9
−4.5 billion years, but it has a similar fraction of heavy elements.[3] The star has prominent starspot activity, with 3% to 14% of the stellar surface covered by areas 575±150 K cooler than the rest of the photosphere.[6]

A multiplicity survey in 2015 did not detect any stellar companions.[7] The star was named Anadolu in 2019 by Turkish astronomers as part of the NameExoWorlds contest.[8]

  1. ^ a b c d e f Brown, A. G. A.; et al. (Gaia collaboration) (2021), "Gaia Early Data Release 3: Summary of the contents and survey properties", Astronomy & Astrophysics, 649: A1, arXiv:2012.01533, Bibcode:2021A&A...649A...1G, doi:10.1051/0004-6361/202039657, S2CID 227254300 (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
  2. ^ a b Cite error: The named reference simbad was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Bonomo2017 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Hebrand2012 was invoked but never defined (see the help page).
  5. ^ Oshagh, M.; Triaud, A. H. M. J.; Burdanov, A.; Figueira, P.; Reiners, Ansgar; Santos, N. C.; Faria, J.; Boue, G.; Díaz, R. F.; Dreizler, S.; Boldt, S.; Delrez, L.; Ducrot, E.; Gillon, M.; Guzman Mesa, A.; Jehin, E.; Khalafinejad, S.; Kohl, S.; Serrano, L.; Udry, S. (2018), "Activity induced variation in spin-orbit angles as derived from Rossiter-McLaughlin measurements", Astronomy & Astrophysics, 619: A150, arXiv:1809.01027, Bibcode:2018A&A...619A.150O, doi:10.1051/0004-6361/201833709, S2CID 54578441
  6. ^ Rosich, A.; Herrero, E.; Mallonn, M.; Ribas, I.; Morales, J. C.; Perger, M.; Anglada-Escudé, G.; Granzer, T. (2020), "Correcting for chromatic stellar activity effects in transits with multiband photometric monitoring: Application to WASP-52", Astronomy and Astrophysics, 641: A82, arXiv:2007.00573, Bibcode:2020A&A...641A..82R, doi:10.1051/0004-6361/202037586, S2CID 225335318
  7. ^ Wöllert, Maria; Brandner, Wolfgang; Bergfors, Carolina; Henning, Thomas (2015), "A Lucky Imaging search for stellar companions to transiting planet host stars", Astronomy & Astrophysics, 575: A23, arXiv:1507.01938, Bibcode:2015A&A...575A..23W, doi:10.1051/0004-6361/201424091, S2CID 119250579
  8. ^ 'Anadolu' and 'Göktürk': Turkey names its star and planet