HD 27894 b

From Wikipedia, the free encyclopedia
Jump to: navigation, search
HD 27894 b
Exoplanet List of exoplanets
Parent star
Star HD 27894
Constellation Reticulum
Right ascension (α) 04h 20m 47.0473s
Declination (δ) –59° 24′ 39.014″
Distance 138.1 ly
(42.37 pc)
Spectral type K2V
Orbital elements
Semi-major axis (a) 0.1221±0.0071 AU
Periastron (q) 0.116 AU
Apastron (Q) 0.128 AU
Eccentricity (e) 0.049±0.08
Orbital period (P) 17.991±0.007 d
(0.049256 y)
Orbital speed (υ) 74.1 km/s
Argument of
(ω) 132.9±9.7°
Time of periastron (T0) 2,453,275.46±0.48 JD
Semi-amplitude (K) 58.1±0.5 m/s
Physical characteristics
Mass (m) >0.618±0.088 MJ
(>196 M)
Discovery information
Discovery date 15 Feb 2005
Discoverer(s) Moutou, Mayor,
Bouchy et al.
Discovery method Radial velocity
Discovery status Published
Database references
Extrasolar Planets
Exoplanet Archive data
Open Exoplanet Catalogue data

HD 27894 b is a gas giant with a mass at least two thirds that of Jupiter, or twice that of Saturn. The distance from the planet to the star is one third compared that of Mercury from our Sun, and it takes almost exactly 18 days to complete one roughly circular orbit.[1]


External links[edit]

Coordinates: Sky map 04h 20m 47.0473s, −59° 24′ 39.014″