Astronomy:HAT-P-24

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Short description: F8 dwarf star in the constellation Gemini
HAT-P-24
Observation data
Equinox J2000.0]] (ICRS)
Constellation Gemini[1]
Right ascension  07h 15m 18.0149s[2]
Declination +14° 15′ 45.475″[2]
Apparent magnitude (V) 11.754[3]
Characteristics
Spectral type F8[4]
Astrometry
Proper motion (μ) RA: 7.6±1.7[5] mas/yr
Dec.: −4.3±1.4[5] mas/yr
Parallax (π)2.48 ± 0.39[2] mas
Distanceapprox. 1,300 ly
(approx. 400 pc)
Details
Mass1.195 ± 0.012[6] M☉
Radius1.321 ± 0.063[6] R☉
Luminosity2.48 +0.032−0.028 L☉
Surface gravity (log g)4.27 ± 0.04[7] cgs
Temperature6329 ± 67[7] K
Metallicity [Fe/H]–0.21 ± 0.08[7] dex
Rotational velocity (v sin i)11.4 ± 1.2[7] km/s
Age2.8 ± 0.6 Gyr
Other designations
TYC 774-1441-1, GSC 0774-01441
Database references
SIMBADdata

HAT-P-24 is an F8 dwarf star about 400 parsecs away.[2] A planet was discovered with the transit method by the HATNet Project in 2010. HAT-P-24b, is a typical hot Jupiter orbiting in only 3 days.[4]

Planetary system

In 2010 the HATNet Project announced the discovery of a hot jupiter type gas giant extrasolar planet in orbit around this star. Following the designation scheme used by the HATNet Project, the star is designated as HAT-P-24, and the planet itself HAT-P-24b.[4]

The HAT-P-24 planetary system[6][8]
Companion
(in order from star) 		Mass Semimajor axis
(AU) 		Orbital period
(days) 		Eccentricity Inclination Radius
b 0.723+0.031
−0.030 MJ 		0.04651+0.00055
−0.00056 		3.3552479±0.0000062 <0.038 88.217 +0.716−0.693° 1.364 ± 0.068 RJ

References

  1. ↑ Roman, Nancy G. (1987). "Identification of a Constellation From a Position". Publications of the Astronomical Society of the Pacific 99 (617): 695–699. doi:10.1086/132034. Bibcode: 1987PASP...99..695R.  Vizier query form
  2. ↑ 2.0 2.1 2.2 2.3 Brown, A. G. A et al. (2016). "Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties". Astronomy and Astrophysics 595: A2. doi:10.1051/0004-6361/201629512. Bibcode: 2016A&A...595A...2G. https://www.aanda.org/articles/aa/full_html/2016/11/aa29512-16/aa29512-16.html. Gaia Data Release 1 catalog entry
  3. ↑ Maxted, P. F. L. et al. (2011). "UBV(RI)C photometry of transiting planet hosting stars". Monthly Notices of the Royal Astronomical Society 418 (2): 1039–1042. doi:10.1111/j.1365-2966.2011.19554.x. Bibcode: 2011MNRAS.418.1039M. https://academic.oup.com/mnras/article/418/2/1039/1070256. 
  4. ↑ 4.0 4.1 4.2 Kipping, D. M. et al. (2011). "HAT-P-24b: An Inflated Hot Jupiter on a 3.36 Day Period Transiting a Hot, Metal-poor Star". The Astrophysical Journal 725 (2): 2017–2028. doi:10.1088/0004-637X/725/2/2017. Bibcode: 2010ApJ...725.2017K. http://iopscience.iop.org/article/10.1088/0004-637X/725/2/2017. 
  5. ↑ 5.0 5.1 Zacharias, N. et al. (2013). "The Fourth US Naval Observatory CCD Astrograph Catalog (UCAC4)". The Astronomical Journal 145 (2): 44. doi:10.1088/0004-6256/145/2/44. Bibcode: 2013AJ....145...44Z. http://iopscience.iop.org/article/10.1088/0004-6256/145/2/44. Vizier catalog entry
  6. ↑ 6.0 6.1 6.2 Wang, Xiao-Bin et al. (2013). "The refined physical parameters of transiting exoplanet system HAT-P-24" (PDF). Research in Astronomy and Astrophysics 13 (5): 593–603. doi:10.1088/1674-4527/13/5/010. Bibcode: 2013RAA....13..593W. http://www.raa-journal.org/raa/index.php/raa/article/view/1315/1099. Retrieved 2018-01-10. 
  7. ↑ 7.0 7.1 7.2 7.3 Torres, Guillermo et al. (2012). "Improved Spectroscopic Parameters for Transiting Planet Hosts". The Astrophysical Journal 757 (2): 161. doi:10.1088/0004-637X/757/2/161. Bibcode: 2012ApJ...757..161T. http://iopscience.iop.org/article/10.1088/0004-637X/757/2/161. 
  8. ↑ Bonomo, A. S. 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 and Astrophysics 602: A107. doi:10.1051/0004-6361/201629882. Bibcode: 2017A&A...602A.107B. https://www.aanda.org/articles/aa/full_html/2017/06/aa29882-16/aa29882-16.html. 

External links

Coordinates: Sky map 07h 15m 18.00s, +14° 15′ 45.4″




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