Astronomy:HAT-P-9
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Short description: F-type star in the constellation Auriga
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Auriga |
| Right ascension | 07h 20m 40.4565s[1] |
| Declination | +37° 08′ 26.343″[1] |
| Apparent magnitude (V) | 12.34 ± 0.27[2] |
| Characteristics | |
| Spectral type | F[3] |
| Apparent magnitude (B) | 12.35 ± 0.23[2] |
| Apparent magnitude (V) | 12.34 ± 0.27[2] |
| Apparent magnitude (J) | 11.274 ± 0.022[2] |
| Apparent magnitude (H) | 11.04 ± 0.03[2] |
| Apparent magnitude (K) | 11.015 ± 0.021[2] |
| Variable type | planetary transit[3] |
| Astrometry | |
| Proper motion (μ) | RA: −9.796(16)[1] mas/yr Dec.: −13.029(14)[1] mas/yr |
| Parallax (π) | 2.1626 ± 0.0140[1] mas |
| Distance | 1,508 ± 10 ly (462 ± 3 pc) |
| Details | |
| Mass | 1.28 ± 0.13[3] M☉ |
| Radius | 1.32 ± 0.07[3] R☉ |
| Surface gravity (log g) | 4.29 ± 0.03[4] cgs |
| Temperature | 6253 ± 84[4] K |
| Metallicity [Fe/H] | 0.16 ± 0.09[4] dex |
| Rotational velocity (v sin i) | 13.4 ± 1.4[4] km/s |
| Age | 1.6 +1.8−1.4 Gyr |
| Equatorial [ g ] | 201,21 m/s2 |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Data sources: | |
| Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) | |
HAT-P-9 is a magnitude 12 F star approximately 1500 light years away in the constellation Auriga.[2] A search for a binary companion star using adaptive optics at the MMT Observatory was negative.[5]
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".[6][7]
Planetary system
An exoplanet orbiting the star, HAT-P-9b, was discovered by the transit method on June 26, 2008.[3]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b / Alef | 0.78 ± 0.09 MJ | 0.053 ± 0.002 | 3.92289 ± 4e-05 | 0 | — | — |
See also
- HATNet Project or HAT
- List of extrasolar planets
References
- ↑ 1.0 1.1 1.2 1.3 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940 Gaia DR3 record for this source at VizieR.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 "SIMBAD query result: TYC 2463-281-1 -- Star". Centre de Données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-id?Ident=GSC02463-00281.
- ↑ 3.0 3.1 3.2 3.3 3.4 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. doi:10.1088/0004-637X/690/2/1393. Bibcode: 2009ApJ...690.1393S.
- ↑ 4.0 4.1 4.2 4.3 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.
- ↑ 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. doi:10.1088/0004-6256/146/1/9. Bibcode: 2013AJ....146....9A.
- ↑ "Approved names" (in en). http://www.nameexoworlds.iau.org/final-results.
- ↑ "International Astronomical Union | IAU". https://www.iau.org/news/pressreleases/detail/iau1912/.
External links
Coordinates: 
07h 20m 40.479s, +37° 08′ 26.17″
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