HAT-P-6

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Template:Short description

HAT-P-6 / Sterrennacht
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Andromeda[1]
Right ascension Template:RA[2]
Declination Template:DEC[2]
Apparent magnitude (V) +10.47[3]
Characteristics
Spectral type F8V[4]
B−V Template:Engvar 0.41[3]
Variable type planetary transit[5]
Astrometry
Radial velocity (Rv)Script error: No such module "val".[2] km/s
Proper motion (μ) RA: Script error: No such module "val". mas/yr[2]
Dec.: Script error: No such module "val". mas/yr[2]
Parallax (π)3.6459±0.0221 mas[2]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)Script error: No such module "val".[5]
Details
Mass1.29 ± 0.06[6] Template:Solar mass
Radius1.46 ± 0.06[6] Template:Solar radius
LuminosityScript error: No such module "val".[5] Template:Solar luminosity
Surface gravity (log g)4.22 ± 0.03[7] cgs
Temperature6,570 ± 80[6] K
Metallicity [Fe/H]–0.13 ± 0.08[6] dex
Rotational velocity (v sin i)8.7 ± 1.0[6] km/s
Age2.3Script error: No such module "Su".[6] Gyr
Metallicity [Fe/H]{{{metal_fe2}}} dex
Other designations
Template:Odlist, HAT-P-6[8]
Database references
SIMBADdata
Exoplanet Archivedata

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HAT-P-6, also named Sterrennacht[9] is a star in the constellation Andromeda, located approximately 895 light years or 274 parsecs away from the Earth. It is an F-type star, implying that it is hotter and more massive than the Sun. The apparent magnitude of the star is +10.54, which means that it can only be visible through the telescope. The absolute magnitude of +3.36 is brighter than the Sun's +4.83, meaning that the star itself is brighter than the Sun.[5] A search for a binary companion star using adaptive optics at the MMT Observatory turned out negative.[10]

The name Sterrennacht (Starry Night) was selected in the NameExoWorlds held by the IAU after a painting by Van Gogh.[9]

Planetary system

The companion planet HAT-P-6b is a transiting planet discovered on October 15, 2007 by the HATNet Project. The planet's true mass is slightly more than Jupiter at only 5.7%, but the radius is 33% greater, making the planet's density of 0.45 g/cm3. Its large size compared to mass comes from the great amount of heat received from the nearby star that expands the planet's atmosphere, categorizing as "hot Jupiter". The orbital period is 3.852985 days and the distance from its star is 0.05235 AU.[5] The inclination of the orbit with respect to the stellar rotation axis is roughly 166º.[11]

Template:OrbitboxPlanet begin Template:OrbitboxPlanet

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See also

References

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  1. ↑ Template:Cite constellation
  2. ↑ a b c d e Template:Cite Gaia DR3
  3. ↑ a b Script error: No such module "citation/CS1".
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  5. ↑ a b c d e Script error: No such module "Citation/CS1".
  6. ↑ a b c d e f Script error: No such module "Citation/CS1".
  7. ↑ Script error: No such module "Citation/CS1".
  8. ↑ Template:Cite simbad
  9. ↑ a b Script error: No such module "citation/CS1".
  10. ↑ Script error: No such module "Citation/CS1".
  11. ↑ Script error: No such module "Citation/CS1".

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External links

Template:Sky

Template:Stars of Andromeda

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