HD 143361 b

HD 143361 b
Parent star
Extrasolar planet		List of extrasolar planets
Star		HD 143361
Constellation		Norma
Right ascension	(α)	16^h 01^m 50.3484^s
Declination	(δ)	–44° 26′ 04.335″
Apparent magnitude	(m_V)	9.20
Distance		193.6 ly (59.35 pc)
Spectral type		G6V
Orbital elements
Semimajor axis	(a)	2.0 AU (300 Gm)
		34 mas
Periastron	(q)	1.6 AU (240 Gm)
Apastron	(Q)	2.4 AU (359 Gm)
Eccentricity	(e)	0.18 ± 0.1
Orbital period	(P)	1086 ± 90 d (2.973 ± 0.246 y)
Orbital speed	(υ)	20 km/s
Argument of periastron	(ω)	187 ± 32°
Time of periastron	(T₀)	2,453,439 ± 190 JD
Physical characteristics
Minimum mass	(m sin i)	3.0 M_J (950 M_⊕)
Discovery information
Discovery date		October 29, 2008
Discoverer(s)		Minniti et al.
Discovery method		Doppler spectroscopy
Discovery status		Published
Other designations
HIP 78521 b
Database references
Extrasolar Planets Encyclopaedia		data
SIMBAD		data
Exoplanet Archive		data
Open Exoplanet Catalogue		data

HD 143361 b is an extrasolar planet located approximately 194 light-years away in the constellation of Norma, orbiting the 9th magnitude G-type main sequence star HD 143361. This planet has a minimum mass of 3.0 times that of Jupiter. Because the inclination is not known, the true mass is not known. This planet orbits at a distance of 2.0 AU with an orbital eccentricity of 0.18.

This object was detected using the radial velocity method during an astronomical survey conducted by the Magellan Planet Search Program using the MIKE echelle spectrograph on the 6.5-m Magellan II (Clay) telescope.

References