HD 212771 b

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HD 212771 b
Extrasolar planet List of extrasolar planets
Parent star
Star HD 212771
Constellation Aquarius
Right ascension (α) 22h 27m 03s
Declination (δ) −17° 15′ 49″
Apparent magnitude (mV) 7.6
Distance 427 ± 46 ly
(131 ± 14 pc)
Spectral type G8IV
Mass (m) 1.15 ± 0.08 M
Radius (r) 5 ± 0.1 R
Temperature (T) 5121 ± 44 K
Metallicity [Fe/H] -0.21 ± 0.03
Age 6 ± 2 Gyr
Orbital elements
Semimajor axis (a) 1.22 ± 0.3 AU
Eccentricity (e) 0.111 ± 0.06
Orbital period (P) 373.3 ± 3.4 d
Physical characteristics
Minimum mass (m sin i) 2.3 ± .4 MJ
Discovery information
Discovery date 2010-03-17
Discoverer(s) Howard et al.
Discovery method Doppler spectroscopy
Discovery status
Database references
Extrasolar Planets
Encyclopaedia
data
SIMBAD data
Exoplanet Archive data
Open Exoplanet Catalogue data

HD 212771 b is an extrasolar planet orbiting the G-type star HD 212771 approximately 427 light years away in the constellation Aquarius.[1]

See also[edit]

References[edit]

  1. ^ Johnson, John Asher et al. (2010). "Retired A Stars and Their Companions IV. Seven Jovian Exoplanets from Keck Observatory". Publications of the Astronomical Society of the Pacific 122 (892): 701–711. arXiv:1003.3445v1 [astro-ph.EP]. doi:10.1086/653809. 

External links[edit]

Coordinates: Sky map 22h 27m 03s, −17° 15′ 49″