HD 23079 b

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HD 23079 b
Extrasolar planet List of extrasolar planets
Parent star
Star HD 23079
Constellation Reticulum
Right ascension (α) 03h 39m 43.0952s
Declination (δ) −52° 54′ 57.017″
Apparent magnitude (mV) 7.1
Distance 113.5 ly
(34.8 pc)
Spectral type F8/G0V
Orbital elements
Semimajor axis (a) 1.60 ± 0.12 AU
(239 Gm)
Periastron (q) 1.44 AU
(215 Gm)
Apastron (Q) 1.76 AU
(263 Gm)
Eccentricity (e) 0.102 ± 0.031
Orbital period (P) 730.6 ± 5.7 d
(2.000 y)
Argument of
periastron
(ω) 55 ± 17°
Time of periastron (T0) 2,450,492 ± 37 JD
Semi-amplitude (K) 54.9 ± 1.1 m/s
Physical characteristics
Minimum mass (m sin i) 2.45 ± 0.16 MJ
Discovery information
Discovery date October 2001
Discoverer(s) Tinney et al.
Discovery method doppler spectroscopy
Discovery site Australia Anglo-Australian Observatory
Discovery status Published

HD 23079 b is an exoplanet approximately 114 light years away in the constellation Reticulum. The planet has mass of at least 2.45 Jupiters, although only the minimum mass is known since inclination is unknown. The planet takes almost exactly two years to orbit the star at the average distance of 1.6 AU. The planet's orbital eccentricity is about the same as 109 Piscium b, HD 75898 b, and HD 69830 b at 0.102. The distance range from as close as 1.44 AU to as far away as 1.76 AU from the parent star.

The planet was discovered in 2001 by Tinney et al., who used doppler spectrometer to look for shifts of star’s spectrum caused by a gravity of the planet tug the star around as the planet orbits.

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Coordinates: Sky map 03h 39m 43.0952s, −52° 54′ 57.017″