WASP-25
Appearance
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Hydra[1] |
Right ascension | 13h 01m 26.3760s[2] |
Declination | −27° 31′ 19.922″[2] |
Apparent magnitude (V) | 11.87[3] |
Characteristics | |
Evolutionary stage | main sequence[2] |
Spectral type | G4[4] |
B−V color index | 0.45[citation needed] |
J−H color index | 0.328[citation needed] |
J−K color index | 0.422[citation needed] |
Astrometry | |
Radial velocity (Rv) | −2.698±0.0028[5] km/s |
Proper motion (μ) | RA: −29.264[2] mas/yr Dec.: −6.196[2] mas/yr |
Parallax (π) | 4.6501±0.0230 mas[2] |
Distance | 701 ± 3 ly (215 ± 1 pc) |
Details[4] | |
Mass | 1.00±0.03 M☉ |
Radius | 0.92 R☉ |
Luminosity | 0.89[6] L☉ |
Surface gravity (log g) | 4.50±0.15 cgs |
Temperature | 5,703±100 K |
Metallicity [Fe/H] | −0.07±0.1 dex |
Rotational velocity (v sin i) | 3.0±1 km/s |
Age | 0.02+3.96 −0.01 Gyr |
Other designations | |
WASP-25, TYC 6706-861-1, 2MASS J13012637-2731199, DENIS J130126.3-273120[7] | |
Database references | |
SIMBAD | data |
WASP-25 is a yellow main sequence star in the constellation of Hydra.
Star characteristics
[edit]WASP-25 is slightly metal-poor (85% of Solar amount) and is probably a young star which has just entered the main sequence.[4]
Planetary system
[edit]The "Hot Jupiter" class planet WASP-25b was discovered around WASP-25 in 2010.[4] The planet would have an equilibrium temperature of 1212±35 K. A Rossiter-McLaughlin effect based study in 2011 found a modest misalignment of the planetary orbit to the rotational axis of the parent star, equal to 14.6±6.7 degrees.[8] A habitability study in 2018 found WASP-25b does not adversely affect the stability of planetary orbits in the habitable zone of WASP-25.[9]
Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
---|---|---|---|---|---|---|
b | 0.58±0.04 MJ | 0.0474±0.0004 | 3.764825±0.000005 | 0 | 88.33±0.32° | 1.26+0.06 −0.05 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 f 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.
- ^ Høg, E.; et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27 – L30. Bibcode:2000A&A...355L..27H.
- ^ a b c d Enoch, B.; Cameron, A. Collier; Anderson, D. R.; Lister, T. A.; Hellier, C.; Maxted, P. F. L.; Queloz, D.; Smalley, B.; Triaud, A. H. M. J.; West, R. G.; Brown, D. J. A.; Gillon, M.; Hebb, L.; Lendl, M.; Parley, N.; Pepe, F.; Pollacco, D.; Segransan, D.; Simpson, E.; Street, R. A.; Udry, S. (2010). "WASP-25b: A 0.6 MJ planet in the Southern hemisphere". Monthly Notices of the Royal Astronomical Society: no. arXiv:1009.5917. doi:10.1111/j.1365-2966.2010.17550.x. S2CID 6314762.
- ^ Soubiran, C.; Jasniewicz, G.; Chemin, L.; Zurbach, C.; Brouillet, N.; Panuzzo, P.; Sartoretti, P.; Katz, D.; Le Campion, J. -F.; Marchal, O.; Hestroffer, D.; Thévenin, F.; Crifo, F.; Udry, S.; Cropper, M.; Seabroke, G.; Viala, Y.; Benson, K.; Blomme, R.; Jean-Antoine, A.; Huckle, H.; Smith, M.; Baker, S. G.; Damerdji, Y.; Dolding, C.; Frémat, Y.; Gosset, E.; Guerrier, A.; Guy, L. P.; et al. (2018). "Gaia Data Release 2. The catalogue of radial velocity standard stars". Astronomy and Astrophysics. 616: A7. arXiv:1804.09370. Bibcode:2018A&A...616A...7S. doi:10.1051/0004-6361/201832795. S2CID 52952408.
- ^ Ulmer-Moll, S.; Santos, N. C.; Figueira, P.; Brinchmann, J.; Faria, J. P. (2019). "Beyond the exoplanet mass-radius relation". Astronomy and Astrophysics. 630: A135. arXiv:1909.07392. Bibcode:2019A&A...630A.135U. doi:10.1051/0004-6361/201936049.
- ^ "WASP-25". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2015-05-30.
- ^ Brown, D. J. A.; Cameron, A. Collier; Anderson, D. R.; Enoch, B.; Hellier, C.; Maxted, P. F. L.; Miller, G. R. M.; Pollacco, D.; Queloz, D.; Simpson, E.; Smalley, B.; Triaud, A. H. M. J.; Boisse, I.; Bouchy, F.; Gillon, M.; Hébrard, G. (2012). "Rossiter-Mc Laughlin effect measurements for WASP-16, WASP-25 and WASP-31★". Monthly Notices of the Royal Astronomical Society. 423 (2): 1503–1520. arXiv:1203.4971. Bibcode:2012MNRAS.423.1503B. doi:10.1111/j.1365-2966.2012.20973.x. S2CID 53445367.
- ^ Georgakarakos, Nikolaos; Eggl, Siegfried; Dobbs-Dixon, Ian (2018). "Giant Planets: Good Neighbors for Habitable Worlds?". The Astrophysical Journal. 856 (2): 155. arXiv:1804.02183. Bibcode:2018ApJ...856..155G. doi:10.3847/1538-4357/aaaf72. S2CID 119522834.
- ^ Planet WASP-25 b at exoplanet.eu
- ^ Southworth, John; Hinse, T. C.; Burgdorf, M.; Calchi Novati, S.; Dominik, M.; Galianni, P.; Gerner, T.; Giannini, E.; Gu, S.-H.; Hundertmark, M.; Jørgensen, U. G.; Juncher, D.; Kerins, E.; Mancini, L.; Rabus, M.; Ricci, D.; Schäfer, S.; Skottfelt, J.; Tregloan-Reed, J.; Wang, X.-B.; Wertz, O.; Alsubai, K. A.; Andersen, J. M.; Bozza, V.; Bramich, D. M.; Browne, P.; Ciceri, S.; d'Ago, G.; Damerdji, Y.; et al. (2014). "High-precision photometry by telescope defocussing – VI. WASP-24, WASP-25 and WASP-26★". Monthly Notices of the Royal Astronomical Society. 444 (1): 776–789. arXiv:1407.6253. Bibcode:2014MNRAS.444..776S. doi:10.1093/mnras/stu1492. S2CID 53641330.