HD 128311 c

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HD 128311 c
Extrasolar planet List of extrasolar planets
Parent star
Star HD 128311
Constellation Boötes
Right ascension (α) 14h 36m 00.5607s
Declination (δ) +09° 44′ 47.466″
Distance 54.14 ly
(18.04 pc)
Spectral type K0V
Mass (m) 0.8 M
Radius (r) 0.73 R
Temperature (T) 4965 K
Metallicity [Fe/H] 0.03
Age 0.39 Gyr
Orbital elements
Semimajor axis (a) 1.76 ± 0.11 AU
Periastron (q) 1.46 AU
Apastron (Q) 2.06 AU
Eccentricity (e) 0.170 ± 0.090
Orbital period (P) 928 ± 18 d
(2.54 y)
Orbital speed (υ) 20.7 km/s
Argument of
periastron
(ω) 200° ± 150°
Time of periastron (T0) 2,450,010 ± 400 JD
Semi-amplitude (K) 76.2 ± 4.6 m/s
Physical characteristics
Minimum mass (m sin i) 3.22 ± 0.49 MJ
(1020 ± 160 M)
Discovery information
Discovery date June 24, 2005
Discoverer(s) Vogt et al.
Discovery method Doppler spectroscopy
Discovery site United States California, USA
Discovery status Published
Database references
Extrasolar Planets
Encyclopaedia
data
SIMBAD data
Exoplanet Archive data
Open Exoplanet Catalogue data

HD 128311 c is an exoplanet located approximately 54 light-years away in the constellation of Boötes. This planet orbits in an eccentric orbit at 1.76 AU from its star (HD 128311). The planet has minimum mass 3.22 Jupiter masses.[1]

References[edit]

  1. ^ Vogt, Steven S. et al. (2005). "Five New Multicomponent Planetary Systems". The Astrophysical Journal 632 (1): 638–658. Bibcode:2005ApJ...632..638V. doi:10.1086/432901. 

External links[edit]

Coordinates: Sky map 14h 36m 00.5607s, +09° 44′ 47.466″