HAT-P-9
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Auriga |
| Right ascension | 07h 20m 40.454s[1] |
| Declination | +37° 08′ 26.35″[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: –14.3 ± 0.7[1] mas/yr Dec.: –11.1 ± 0.9[1] mas/yr |
| Distance | 1564,8 ± 195,6 ly (480 ± 60 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.) | |
HAT-P-9 is a magnitude 12 F star approximately 1560 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]
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
References
- 1 2 3 4 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 - 1 2 3 4 5 6 7 "SIMBAD query result: TYC 2463-281-1 -- Star". Centre de Données astronomiques de Strasbourg. Retrieved 2009-05-18.
- 1 2 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. arXiv:0806.4008. Bibcode:2009ApJ...690.1393S. doi:10.1088/0004-637X/690/2/1393.
- 1 2 3 4 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.
- ↑ 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.
External links
- Image HAT-P-9
- "HAT-P-9". Exoplanets. Retrieved 2009-05-18.
Coordinates: 
07h 20m 40.479s, +37° 08′ 26.17″
Template:Exoplanet-star-stub
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