HD 47186 b

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HD 47186 b
Exoplanet List of exoplanets
Parent star
Star HD 47186
Constellation Canis Major
Right ascension (α) 06h 36m 08.7880s
Declination (δ) −27° 37′ 20.268″
Apparent magnitude (mV) 7.8
Distance 123.4 ly
(37.8 pc)
Spectral type G6V
Mass (m) 0.99 M
Temperature (T) 5675 ± 21 K
Metallicity [Fe/H] 0.23 ± 0.02
Orbital elements
Semimajor axis (a) 0.050 AU
Periastron (q) 0.048 AU
Apastron (Q) 0.052 AU
Eccentricity (e) 0.038 ± 0.02
Orbital period (P) 4.0845 ± 0.0002 d
Orbital speed (υ) 130 km/s
Time of periastron (T0) 2,454,562.77 ± 0.08 JD
Physical characteristics
Minimum mass (m sin i) 0.07167 MJ
(22.78 M)
Discovery information
Discovery date June 16, 2008
Discoverer(s) Bouchy et al.
Discovery method Doppler spectroscopy
Discovery site Chile La Silla Observatory
Discovery status Published[1]
Database references
Extrasolar Planets
Encyclopaedia
data
SIMBAD data
Exoplanet Archive data
Open Exoplanet Catalogue data

HD 47186 b is a “hot Neptuneextrasolar planet located approximately 123 light years away in the constellation of Canis Major, orbiting the star HD 47186. This planet has a minimum mass of 22.78 times that of Earth and orbits very close to the star at a similar distance from the star as 51 Pegasi b is from 51 Pegasi. As in consequence, it takes 4.0845 days to complete an orbit with an eccentricity of 0.038, which is similar to the 5.66 year-period planet HD 70642 b.

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Coordinates: Sky map 06h 36m 08.7880s, −27° 37′ 20.268″