HD 143361 b

HD 143361 b
Discovery[1]
Discovered byMinniti et al.
Discovery dateOctober 29, 2008
Doppler spectroscopy
Orbital characteristics[2]
1.994±0.018 AU
Eccentricity0.1938+0.0047
−0.0046
1042.4±1.1 d
2.8538+0.0031
−0.003 yr
Inclination55°+22°
−15° or 125°+15°
−22°
33°+128°
−21°
2455761.5±4.1
240.4°+1.4°
−1.5°
Semi-amplitude72.1±1.0[3]
StarHD 143361
Physical characteristics[2]
Mass4.35+1.2
−0.66 MJ

HD 143361 b is an exoplanet located approximately 224 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 was initially unknown, the true mass was 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.[1] In 2023, the inclination and true mass of HD 143361 b were determined via astrometry.[2]

  1. ^ a b Cite error: The named reference Minniti2009 was invoked but never defined (see the help page).
  2. ^ a b c Cite error: The named reference Xiao2023 was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference Jenkins2017 was invoked but never defined (see the help page).