HAT-P-9

HAT-P-9 / Tevel

The Size Comparison of HAT-P-9 System (Tevel).
Observation data
Epoch J2000      Equinox ICRS
Constellation Auriga
Right ascension 07h 20m 40.4565s
Declination +37° 08′ 26.343″
Apparent magnitude (V) 12.34 ± 0.27
Characteristics
Evolutionary stage main sequence
Spectral type F
Apparent magnitude (B) 12.35 ± 0.23
Apparent magnitude (V) 12.34 ± 0.27
Apparent magnitude (J) 11.274 ± 0.022
Apparent magnitude (H) 11.04 ± 0.03
Apparent magnitude (K) 11.015 ± 0.021
Variable type planetary transit
Astrometry
Radial velocity (Rv)20.69±2.27 km/s
Proper motion (μ) RA: −9.796 mas/yr
Dec.: −13.029 mas/yr
Parallax (π)2.1626±0.0140 mas
Distance1,508 ± 10 ly
(462 ± 3 pc)
Details
Mass1.281+0.057
−0.056 M☉
Radius1.338+0.065
−0.060 R☉
Luminosity2.62+0.26
−0.23 L☉
Surface gravity (log g)4.293+0.033
−0.035 cgs
Temperature6253 ± 84 K
Metallicity [Fe/H]0.16 ± 0.09 dex
Rotational velocity (v sin i)13.4 ± 1.4 km/s
Age1.6+1.8
−1.4 Gyr
Other designations
Tevel, TOI-1731, TIC 371234684, TYC 2463-281-1, GSC 02463-00281, 2MASS J07204044+3708263, HAT-P-9
Database references
SIMBADdata
Exoplanet Archivedata

HAT-P-9 is a magnitude 12 F-type star approximately 1500 light-years away in the constellation Auriga. A search for a binary companion star using adaptive optics at the MMT Observatory was negative.

Naming

The star HAT-P-9 is named Tevel. The name was selected in the NameExoWorlds campaign by Israel, during the 100th anniversary of the IAU. The Hebrew word תֵבֵל tevel means "World" or "Universe".

Planetary system

An exoplanet orbiting the star, HAT-P-9b, was discovered by the transit method on June 26, 2008. This is a low-density hot Jupiter, orbiting its star in just 3.9 days.

The HAT-P-9 planetary system
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination
(°)		 Radius
b / Alef 0.749+0.064
−0.063 MJ		 0.05287±0.00078 3.92281072(102) 0.084+0.052
−0.047		 86.44+0.37
−0.36		 1.393+0.067
−0.065 RJ

See also

References

  1. ↑ 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.
  2. 1 2 3 4 5 6 7 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.
  3. 1 2 3 4 5 6 7 8 "SIMBAD query result: TYC 2463-281-1 -- Star". Centre de Données astronomiques de Strasbourg. Retrieved 2009-05-18.
  4. 1 2 3 Shporer, Avi; et al. (2009). "HAT-P-9b: A Low-Density Planet Transiting a Moderately Faint F Star". The Astrophysical Journal. 690 (2): 1393–1400. arXiv:0806.4008. Bibcode:2009ApJ...690.1393S. doi:10.1088/0004-637X/690/2/1393. S2CID 930937.
  5. 1 2 3 4 5 Wang, Yong-Hao; Wang, Songhu; et al. (February 2019). "Transiting Exoplanet Monitoring Project (TEMP). V. Transit Follow Up for HAT-P-9b, HAT-P-32b, and HAT-P-36b". The Astronomical Journal. 157 (2): 82. Bibcode:2019AJ....157...82W. doi:10.3847/1538-3881/aaf6b6.
  6. 1 2 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. S2CID 16580774.
  7. ↑ Bonomo, A. S.; Desidera, S.; et al. (June 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 & Astrophysics. 602: A107. arXiv:1704.00373. Bibcode:2017A&A...602A.107B. doi:10.1051/0004-6361/201629882. S2CID 118923163.
  8. ↑ Adams, E. R.; et al. (2013). "Adaptive Optics Images. II. 12 Kepler Objects of Interest and 15 Confirmed Transiting Planets". The Astronomical Journal. 146 (1). 9. arXiv:1305.6548. Bibcode:2013AJ....146....9A. doi:10.1088/0004-6256/146/1/9. S2CID 119117620.
  9. ↑ "Approved names". NameExoworlds. Retrieved 2020-01-02.
  10. ↑ "International Astronomical Union | IAU". www.iau.org. Archived from the original on 2022-12-05. Retrieved 2020-01-02.