HD 145377 b

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HD 145377 b
Exoplanet List of exoplanets
Parent star
Star HD 145377
Constellation Scorpius
Right ascension (α) 16h 11m 36.445s[1]
Declination (δ) −27° 04′ 41.43″[1]
Apparent magnitude (mV) 8.12
Distance 180 ± 9[1] ly
(55 ± 3[1] pc)
Spectral type G3V
Orbital elements
Semi-major axis (a) 0.45 ± 0.004 AU
(67 ± 0.6 Gm)
Periastron (q) 0.31 AU
(46 Gm)
Apastron (Q) 0.59 AU
(88 Gm)
Eccentricity (e) 0.307 ± 0.017
Orbital period (P) 103.95 ± 0.13 d
(0.28459 ± 0.00036 y)
Orbital speed (υ) 47.3 km/s
Argument of
periastron
(ω) 138.1 ± 2.8°
Time of periastron (T0) 2,454,635.4 ± 0.6 JD
Physical characteristics
Minimum mass (m sin i) 5.76 ± 0.01 MJ
(1830 ± 3 M)
Discovery information
Discovery date October 26, 2008
Discoverer(s) Moutou et al.[2]
Discovery method Doppler spectroscopy
(HARPS)
Discovery site La Silla Observatory
Discovery status Published[2]
Database references
Extrasolar Planets
Encyclopaedia
data
SIMBAD data
Exoplanet Archive data
Open Exoplanet Catalogue data

HD 145377 b is an extrasolar planet located approximately 180 light-years away[1] in the constellation of Scorpius, orbiting the 8th magnitude G-type main sequence star HD 145377. This planet orbits at a distance of 0.45 astronomical units and takes 104 days to revolve around the star with an eccentricity of 0.307. It has mass of 5.76 times that of Jupiter, however the mass value is only minimum since the inclination of the orbit is not known.

This planet was discovered on October 26, 2008 by Moutou et al. using the HARPS spectrograph on ESO’s 3.6 meter telescope installed at La Silla Observatory in Atacama desert, Chile.[2]

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Coordinates: Sky map 16h 11m 36.4455s, −27° 04′ 41.421″