| 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 |
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]
References
- 1 2 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.
- 1 2 3 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
- "HD 143361 b". Exoplanets. Archived from the original on 2012-03-04. Retrieved 2008-11-06.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.