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.
| Discovery[1] | |
|---|---|
| Discovered by | Minniti et al. |
| Discovery date | October 29, 2008 |
| Doppler spectroscopy | |
| Orbital characteristics[2] | |
| 1.994±0.018 AU | |
| Eccentricity | 0.1938+0.0047 −0.0046 |
| 1042.4±1.1 d 2.8538+0.0031 −0.003 yr | |
| Inclination | 55°+22° −15° or 125°+15° −22° |
| 33°+128° −21° | |
| 2455761.5±4.1 | |
| 240.4°+1.4° −1.5° | |
| Semi-amplitude | 72.1±1.0[3] |
| Star | HD 143361 |
| Physical characteristics[2] | |
| Mass | 4.35+1.2 −0.66 MJ |
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]
References
edit- ^ a b Minniti, Dante; et al. (2009). "Low-Mass Companions for Five Solar-Type Stars From the Magellan Planet Search Program". The Astrophysical Journal. 693 (2): 1424–1430. arXiv:0810.5348. Bibcode:2009ApJ...693.1424M. doi:10.1088/0004-637X/693/2/1424. S2CID 119224845.
- ^ a b c Xiao, Guang-Yao; Liu, Yu-Juan; et al. (May 2023). "The Masses of a Sample of Radial-Velocity Exoplanets with Astrometric Measurements". Research in Astronomy and Astrophysics. 23 (5): 055022. arXiv:2303.12409. Bibcode:2023RAA....23e5022X. doi:10.1088/1674-4527/accb7e.
- ^ Jenkins, J. S.; et al. (2017). "New planetary systems from the Calan–Hertfordshire Extrasolar Planet Search". Monthly Notices of the Royal Astronomical Society. 466 (1): 443–473. arXiv:1603.09391. Bibcode:2017MNRAS.466..443J. doi:10.1093/mnras/stw2811. S2CID 18016219.
External links
edit- "HD 143361 b". Exoplanets. Archived from the original on 2012-03-04. Retrieved 2008-11-06.
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