HAT-P-9
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]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Auriga |
| Right ascension | 07h 20m 40.4562s[1] |
| Declination | +37° 08′ 26.3428″[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] |
| Astrometry | |
| Proper motion (μ) | RA: −9.630±0.071[1] mas/yr Dec.: −13.043±0.064[1] mas/yr |
| Parallax (π) | 2.1687 ± 0.0421[1] mas |
| Distance | 1,500 ± 30 ly (461 ± 9 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 |
| Extrasolar Planets Encyclopaedia | data |
| Data sources: | |
| Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) | |
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 | 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
- Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- "SIMBAD query result: TYC 2463-281-1 -- Star". Centre de Données astronomiques de Strasbourg. Retrieved 2009-05-18.
- 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.
- 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.
- 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.
- "Approved names". NameExoworlds. Retrieved 2020-01-02.
- "International Astronomical Union | IAU". www.iau.org. Retrieved 2020-01-02.
External links
- Image HAT-P-9
- "HAT-P-9". Exoplanets. Archived from the original on 2016-03-03. Retrieved 2009-05-18.
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