HD 171028 b

From Wikipedia, the free encyclopedia
Jump to: navigation, search
HD 171028 b
Exoplanet List of exoplanets
Parent star
Star HD 171028
Constellation Ophiuchus
Right ascension (α) 18h 32m 15.4929s
Declination (δ) +06° 56′ 44.714″
Distance 293.5±25.4 ly
(90±7.8 pc)
Spectral type G0V
Orbital elements
Semi-major axis (a) 1.29 AU
Periastron (q) 0.50 AU
Apastron (Q) 2.08 AU
Eccentricity (e) 0.61
Orbital period (P) 538±2 d
(1.47 y)
Orbital speed (υ) 26.2 km/s
Argument of
(ω) 305±1°
Time of periastron (T0) 2453648.92±1.89 JD
Semi-amplitude (K) ? m/s
Physical characteristics
Mass (m) >1.83 MJ
Discovery information
Discovery date July 13, 2007
Discoverer(s) Santos et al.
Discovery method Doppler spectroscopy
Discovery status Unpublished
Database references
Extrasolar Planets
Exoplanet Archive data
Open Exoplanet Catalogue data

HD 171028 b is a >1.83 MJ exoplanet orbiting very eccentrically around HD 171028. The period is 1.47 years and semi-major axis of 1.29 AU. The Geneva Extrasolar Planet Search team announced the discovery of planet on July 13, 2007.


External links[edit]

Coordinates: Sky map 18h 32m 15.4929s, +06° 56′ 44.714″