WASP-59
WASP-59 is a K-type main-sequence star about 379 light-years away. 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.[2] The star produces extremely low levels of ultraviolet light, indicating an absence of flare activity.[4]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Pegasus |
| Right ascension | 23h 18m 29.5475s[1] |
| Declination | 24° 53′ 21.4364″[1] |
| Apparent magnitude (V) | 12.78 |
| Characteristics | |
| Evolutionary stage | Main sequence |
| Spectral type | K5V |
| Astrometry | |
| Radial velocity (Rv) | -56.82[1] km/s |
| Proper motion (μ) | RA: 33.729[1] mas/yr Dec.: −2.522[1] mas/yr |
| Parallax (π) | 8.5968 ± 0.0421[1] mas |
| Distance | 379 ± 2 ly (116.3 ± 0.6 pc) |
| Details[2] | |
| Mass | 0.719±0.035 M☉ |
| Radius | 0.613±0.044 R☉ |
| 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 | |
| Database references | |
| SIMBAD | data |
A multiplicity survey in 2015 did not detect any stellar companions to WASP-59.[5]
Planetary system
In 2012 a transiting hot Jupiter planet b was detected on a tight, mildly eccentric orbit.[6]
Its equilibrium temperature is 670±35 K.[6] The planet is unusually dense for a gas giant, representing an outlier on a mass-radius diagram.[7]
| 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
- Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- 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, doi:10.1051/0004-6361/201629882, S2CID 118923163
- "WASP-59". SIMBAD. Centre de données astronomiques de Strasbourg.
- Shkolnik, Evgenya L. (2013), "An Ultraviolet Investigation of Activity on Exoplanet Host Stars", The Astrophysical Journal, 766: 9, arXiv:1301.6192, 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, doi:10.1051/0004-6361/201424091, S2CID 119250579
- 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
- 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, arXiv:1306.3509, doi:10.1093/mnras/stt1089, S2CID 53645606
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