WASP-25

WASP-25
Observation data; Epoch J2000 Equinox
Constellation	Hydra
Right ascension	13h 01m 26.3760s
Declination	−27° 31′ 19.9208″
Apparent magnitude (V)	11.87
Characteristics
Evolutionary stage	main sequence star
Spectral type	G4V
B−V color index	0.45
J−H color index	0.328
J−K color index	0.422
Astrometry
Radial velocity (Rv)	-2.698±0.0028 km/s
Proper motion (μ)	RA: -29.268±0.061 mas/yr ; Dec.: -6.293±0.047 mas/yr
Parallax (π)	4.714 ± 0.0324[1] mas
Distance	692 ± 5 ly ; (212 ± 1 pc)
Details[2][3]
Mass	1.00±0.03 M☉
Radius	0.92 R☉
Surface gravity (log g)	4.50±0.15 cgs
Temperature	5615±55 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, DENIS J130126.3-273120, 2MASS J13012637-2731199, Gaia DR2 6186950525042445824

WASP-25 is a yellow main sequence star in the constellation of Hydra.

Star characteristics

WASP-25 is slightly metal-poor (85% of Solar amount) and is probably a young star which has just entered the main sequence.[2]

Planetary system

The "Hot Jupiter" class planet WASP-25b was discovered around WASP-25 in 2010.[2] 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.[4] A habitability study in 2018 found WASP-25b does not adversely affect the stability of planetary orbits in the habitable zone of WASP-25.[5]

The WASP-25 planetary system[6][7]
Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (days)	Eccentricity	Inclination	Radius
b	0.58±0.04 M_J	0.0474±0.0004	3.764825±0.000005	0	88.33±0.32°	1.26^+0.06 _−0.05 R_J

References

WASP-25 -- Star
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.
Maxted, P. F. L., Koen, C., Smalley, B., 2011, MNRAS, 418, 1039
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.

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[Simbad-1] WASP-25 -- Star

[Enoch2010-2] 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.

[3] Maxted, P. F. L., Koen, C., Smalley, B., 2011, MNRAS, 418, 1039

[4] 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.

[5] 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.

[6] Planet WASP-25 b at exoplanet.eu

[7] 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.