HAT-P-9

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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
TYC 2463-281-1, HAT-P 9, SDSS J072040.44+370826.3, GSC 02463-00281, 2MASS J07204044+3708263, UCAC2 44825174.
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]

The HAT-P-9 planetary system
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

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External links

  • Image HAT-P-9
  • Lua error in package.lua at line 80: module 'strict' not found.

Coordinates: Sky map 07h 20m 40.479s, +37° 08′ 26.17″


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  1. ↑ 1.0 1.1 1.2 1.3 Lua error in package.lua at line 80: module 'strict' not found.Vizier catalog entry
  2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 Lua error in package.lua at line 80: module 'strict' not found.
  3. ↑ 3.0 3.1 3.2 3.3 Lua error in package.lua at line 80: module 'strict' not found.
  4. ↑ 4.0 4.1 4.2 4.3 Lua error in package.lua at line 80: module 'strict' not found.
  5. ↑ Lua error in package.lua at line 80: module 'strict' not found.
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