HD 178911 Bb

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HD 178911 Bb
Extrasolar planet List of extrasolar planets
Parent star
Star HD 178911 B
Constellation Lyra
Right ascension (α) 19h 09m 04.3838s
Declination (δ) +34° 36′ 01.625″
Distance 160 ly
(49.0 pc)
Spectral type G1V
Orbital elements
Semimajor axis (a) 0.345 AU
Periastron (q) 0.297 AU
Apastron (Q) 0.393 AU
Eccentricity (e) 0.139 ± 0.14
Orbital period (P) 71.511 ± 0.011 d
(0.19578 y)
Orbital speed (υ) 52.7 km/s
Argument of
periastron
(ω) 172.3 ± 5°
Time of periastron (T0) 2,451,378.23 ± 83 JD
Semi-amplitude (K) 346.9 ± 4.2 m/s
Physical characteristics
Minimum mass (m sin i) 7.35 MJ
(2340 M)
Discovery information
Discovery date April 4, 2001[1]
Discoverer(s) Zucker et al.[2]
Discovery method Radial velocity (Echelle)
Discovery status Published[2]
Other designations
HIP 94076 b
Database references
Extrasolar Planets
Encyclopaedia
data
SIMBAD data

HD 178911 Bb is a planet discovered in 2001[1] by Zucker who used the radial velocity method. The minimum mass of this giant planet is 7.35 times that of Jupiter that orbits close to the star. The period of the planet is 71.5 days and the semi-amplitude is 346.9 m/s.

References[edit]

  1. ^ a b "Exoplanets: The Hunt Continues!" (Press release). Garching, Germany: European Southern Observatory. April 4, 2001. Retrieved December 29, 2012. 
  2. ^ a b Zucker, S. et al. (2002). "A Planet Candidate in the Stellar Triple System HD 178911". The Astrophysical Journal 568 (1): 363–368. arXiv:astro-ph/0111550. Bibcode:2002ApJ...568..363Z. doi:10.1086/338892. 

External links[edit]

Coordinates: Sky map 19h 09m 04.3838s, +34° 36′ 01.625″