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HAT-P-25

Summary

HAT-P-25 is a G-type main-sequence star about 985 light-years away. It has a very low flare activity.[4] The star is enriched in heavy elements, having about twice amount of metals compared to solar abundance.

HAT-P-25
Observation data
Epoch J2000      Equinox J2000
Constellation Aries
Right ascension 03h 13m 44.4981s[1]
Declination +25° 11′ 50.689″[1]
Apparent magnitude (V) 13.15[2]
Characteristics
Spectral type G5V
Astrometry
Proper motion (μ) RA: 13.490(21) mas/yr[1]
Dec.: −13.684(16) mas/yr[1]
Parallax (π)3.3128 ± 0.0178 mas[1]
Distance985 ± 5 ly
(302 ± 2 pc)
Details[3]
Mass1.012+0.051
−0.051 M☉
Radius0.919±0.034 R☉
Surface gravity (log g)4.516+0.026
−0.025 cgs
Temperature5519+78
−76 K
Metallicity0.29±0.08
Age3.2±2.3 Gyr
Other designations
Gaia DR2 3668036348641580288, TYC 320-1027-1, GSC 0320-01027, 2MASS J14123753+0403359[2]
Database references
SIMBADdata

Planetary system edit

In 2010 a transiting hot Jupiter like planet was detected.[5] It has an equilibrium temperature of 1182±25 K.[3] The stability of orbits within circumstellar habitable zone is not significantly affected by the HAT-P-25b planet.[6]

 
Size comparison of HAT-P-25 b and Jupiter
The HAT-P-25 planetary system[5][3]
Companion
(in order from star) 		Mass Semimajor axis
(AU) 		Orbital period
(days) 		Eccentricity Inclination Radius
b 0.569+0.023
−0.022 MJ 		0.0466±0.0005 3.65281514+0.00000076
−0.00000075 		0.023+0.022
−0.014 		87.6±0.5° 1.135±0.048 RJ

References edit

  1. ^ a b c d 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.
  2. ^ a b HAT-P-25 -- Star
  3. ^ a b c Wang, Xian-Yu; Wang, Songhu; Hinse, Tobias C.; Li, Kai; Wang, Yong-Hao; Laughlin, Gregory; Liu, Hui-Gen; Zhang, Hui; Wu, Zhen-Yu; Zhou, Xu; Zhou, Ji-Lin; Hu, Shao-Ming; Wu, Dong-Hong; Peng, Xi-Yan; Chen, Yuan-Yuan (2018), "Transiting Exoplanet Monitoring Project (TEMP). IV. Refined System Parameters, Transit Timing Variations and Orbital Stability of the Transiting Planetary System HAT-P-25", Publications of the Astronomical Society of the Pacific, 130 (988): 064401, arXiv:1805.01580, Bibcode:2018PASP..130f4401W, doi:10.1088/1538-3873/aab93e, S2CID 118993367
  4. ^ Evgenya L. Shkolnik, "AN ULTRAVIOLET INVESTIGATION OF ACTIVITY ON EXOPLANET HOST STARS", 2013
  5. ^ a b Quinn, S. N.; Bakos, G. Á.; Hartman, J.; Torres, G.; Kovács, G.; Latham, D. W.; Noyes, R. W.; Fischer, D. A.; Johnson, J. A.; Marcy, G. W.; Howard, A. W.; Szentgyorgyi, A.; Fűrész, G.; Buchhave, L. A.; Béky, B.; Sasselov, D. D.; Stefanik, R. P.; Perumpilly, G.; Everett, M.; Lázár, J.; Papp, I.; Sári, P. (2010), "HAT-P-25b: a Hot-Jupiter Transiting a Moderately Faint G Star", The Astrophysical Journal, 745: 80, arXiv:1008.3565, doi:10.1088/0004-637X/745/1/80, S2CID 119291022
  6. ^ Nikolaos Georgakarakos, Siegfried Eggl, and Ian Dobbs-Dixon, "Giant Planets: Good Neighbors for Habitable Worlds?", 2018