WASP-59
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Pegasus[1] |
| Right ascension | 23h 18m 29.54747s[2] |
| Declination | +24° 53′ 21.4386″[2] |
| Apparent magnitude (V) | 12.78[3] |
| Characteristics | |
| Evolutionary stage | Main sequence |
| Spectral type | K5V[4] |
| Astrometry | |
| Radial velocity (Rv) | −57.07±0.44[2] km/s |
| Proper motion (μ) | RA: −33.675 mas/yr[2] Dec.: −2.675 mas/yr[2] |
| Parallax (π) | 8.6178±0.0140 mas[2] |
| Distance | 378.5 ± 0.6 ly (116.0 ± 0.2 pc) |
| Details[5] | |
| Mass | 0.719±0.035 M☉ |
| Radius | 0.613±0.044 R☉ |
| Surface gravity (log g) | 4.72±0.06[4] cgs |
| Temperature | 4650±150 K |
| Metallicity [Fe/H] | -0.15±0.11 dex |
| Rotational velocity (v sin i) | 2.3±1.5 km/s |
| Age | 7±7 Gyr |
| Other designations | |
| TOI-5969, TIC 91051152, WASP-59, 2MASS J23182955+2453214[3] | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
WASP-59 is a K-type main-sequence star about 379 light-years away in the constellation Pegasus. The star's age is essentially unconstrained by observations. WASP-59 is slightly depleted in heavy elements, having 70% of the solar abundance of iron.[5] The star produces extremely low levels of ultraviolet light, indicating an absence of flare activity.[6]
A multiplicity survey in 2015 did not detect any stellar companions to WASP-59.[7]
Planetary system
[edit]In 2012 a transiting hot Jupiter planet, WASP-59b, was detected on a tight, mildly eccentric orbit.[4]
Its equilibrium temperature is 670±35 K.[4] The planet is unusually dense for a gas giant, representing an outlier on the mass-radius diagram.[8]
| Companion (in order from star) | Mass | Semimajor axis (AU) | Orbital period (days) | Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 0.857+0.046 −0.047 MJ | 0.0697±0.0011 | 7.919585±0.000010 | 0.101+0.046 −0.048 | 89.27±0.52° | 0.775±0.068 RJ |
References
[edit]- ^ Roman, Nancy G. (1987). "Identification of a constellation from a position". Publications of the Astronomical Society of the Pacific. 99 (617): 695. Bibcode:1987PASP...99..695R. doi:10.1086/132034. Constellation record for this object at VizieR.
- ^ 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 "WASP-59". SIMBAD. Centre de données astronomiques de Strasbourg.
- ^ a b c d Hébrard, G.; Collier Cameron, A.; Brown, D. J. A.; Díaz, R. F.; Faedi, F.; Smalley, B.; Anderson, D. R.; Armstrong, D.; Barros, S. C. C.; Bento, J.; Bouchy, F.; Doyle, A. P.; Enoch, B.; Gómez Maqueo Chew, Y.; Hébrard, É. M.; Hellier, C.; Lendl, M.; Lister, T. A.; Maxted, P. F. L.; McCormac, J.; Moutou, C.; Pollacco, D.; Queloz, D.; Santerne, A.; Skillen, I.; Southworth, J.; Tregloan-Reed, J.; Triaud, A. H. M. J.; Udry, S.; et al. (2012), "WASP-52b, WASP-58b, WASP-59b, and WASP-60b: four new transiting close-in giant planets", Astronomy & Astrophysics, 549: A134, arXiv:1211.0810, doi:10.1051/0004-6361/201220363, S2CID 54502046
- ^ a b c Bonomo, A. S.; Desidera, S.; Benatti, S.; Borsa, F.; Crespi, S.; Damasso, M.; Lanza, A. F.; Sozzetti, A.; Lodato, G.; Marzari, F.; Boccato, C.; Claudi, R. U.; Cosentino, R.; Covino, E.; Gratton, R.; Maggio, A.; Micela, G.; Molinari, E.; Pagano, I.; Piotto, G.; Poretti, E.; Smareglia, R.; Affer, L.; Biazzo, K.; Bignamini, A.; Esposito, M.; Giacobbe, P.; Hébrard, G.; Malavolta, L.; et al. (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, S2CID 118923163
- ^ Shkolnik, Evgenya L. (2013), "An Ultraviolet Investigation of Activity on Exoplanet Host Stars", The Astrophysical Journal, 766 (1): 9, arXiv:1301.6192, Bibcode:2013ApJ...766....9S, doi:10.1088/0004-637X/766/1/9, S2CID 118415788
- ^ 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
- ^ Southworth, J.; Mancini, L.; Browne, P.; Burgdorf, M.; Calchi Novati, S.; Dominik, M.; Gerner, T.; Hinse, T. C.; Jorgensen, U. G.; Kains, N.; Ricci, D.; Schafer, S.; Schonebeck, F.; Tregloan-Reed, J.; Alsubai, K. A.; Bozza, V.; Chen, G.; Dodds, P.; Dreizler, S.; Fang, X. -S.; Finet, F.; Gu, S. -H.; Hardis, S.; Harpsoe, K.; Henning, Th.; Hundertmark, M.; Jessen-Hansen, J.; Kerins, E.; Kjeldsen, H.; et al. (2013), "High-precision photometry by telescope defocussing. V. WASP-15 and WASP-16", Monthly Notices of the Royal Astronomical Society, 434 (2): 1300–1308, arXiv:1306.3509, doi:10.1093/mnras/stt1089, S2CID 53645606
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