HAT-P-24

HAT-P-24
Observation data
Epoch J2000      Equinox J2000
Constellation Gemini[1]
Right ascension 07h 15m 18.020s[2]
Declination +14° 15′ 45.39″[2]
Apparent magnitude (V) 11.754[3]
Characteristics
Spectral type F8
Astrometry
Proper motion (μ) RA: 7.6 ± 1.7[2] mas/yr
Dec.: –4.3 ± 1.4[2] mas/yr
Distance405 +27
−25 or 306 ± 20 pc
Details
Mass1.195 ± 0.012[4] M☉
Radius1.321 ± 0.063[4] R☉
Luminosity2.48 +0.032
−0.028 L☉
Surface gravity (log g)4.27 ± 0.04[5] cgs
Temperature6329 ± 67[5] K
Metallicity [Fe/H]–0.21 ± 0.08[5] dex
Rotational velocity (v sin i)11.4 ± 1.2[5] km/s
Age2.8 ± 0.6 Gyr
Other designations
GSC 0774-01441

HAT-P-24 is an F8 dwarf star about 405 parsecs away. However, some sources indicate that the star is about 306 parsecs away. 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.[6]

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.[6]

The HAT-P-24 planetary system[4]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b 0.691 ± 0.027 MJ 0.04655 +0.00016
−0.00015		 3.3552479 ± 0.0000062 0.064 +0.023
−0.020		 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. Bibcode:1987PASP...99..695R. doi:10.1086/132034. Vizier query form
  2. ↑ 2.0 2.1 2.2 2.3 Zacharias, N. et al. (2013). "The Fourth US Naval Observatory CCD Astrograph Catalog (UCAC4)". The Astronomical Journal 145 (2). 44. arXiv:1212.6182. Bibcode:2013AJ....145...44Z. doi:10.1088/0004-6256/145/2/44.Vizier 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. arXiv:1108.0349. Bibcode:2011MNRAS.418.1039M. doi:10.1111/j.1365-2966.2011.19554.x.
  4. ↑ 4.0 4.1 4.2 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. Bibcode:2013RAA....13..593W. doi:10.1088/1674-4527/13/5/010.
  5. ↑ 5.0 5.1 5.2 5.3 Torres, Guillermo et al. (2012). "Improved Spectroscopic Parameters for Transiting Planet Hosts". The Astrophysical Journal 757 (2). 161. arXiv:1208.1268. Bibcode:2012ApJ...757..161T. doi:10.1088/0004-637X/757/2/161.
  6. ↑ 6.0 6.1 Kipping, D. M. et al. (2010). "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. arXiv:1008.3389. Bibcode:2010ApJ...725.2017K. doi:10.1088/0004-637X/725/2/2017.

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