HD 171028 b

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HD 171028 b
Extrasolar planet List of extrasolar planets
Planet HD 171028 b.png
Artist's conception of HD 171028 b, as a jovian planet.
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
Semimajor 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
periastron
(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Discovery status Unpublished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
Encyclopaedia
data
SIMBAD 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.

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