HD 196050 b is an exoplanet with a 1378-day period and a minimum mass of 2.90 Jupiter masses. The average orbital distance is 2.54 astronomical units and the orbital eccentricity is 22.8%. The periastron (closest) distance is 1.96 AU and the apastron (farthest) distance is 3.12 AU. The average orbital velocity is 20.1 km/s and the semi-amplitude is 49.7 m/s. The longitude of periastron is 187° and the time of periastron is 2,450,843 JD.
| Discovery[1] | |
|---|---|
| Discovered by | Jones et al. |
| Discovery site | Anglo-Australian Observatory |
| Discovery date | 13 June 2002 |
| Doppler spectroscopy (AAT) | |
| Orbital characteristics[2] | |
| 2.585+0.032 −0.035 AU | |
| Eccentricity | 0.178±0.011 |
| 1393±9 d 3.813+0.026 −0.024 yr | |
Average orbital speed | 20.1 |
| Inclination | 41.0°+10.0° −6.3° or 139.0°+6.3° −10.0° |
| 15.2°+157.0° −9.2° | |
| 2456307+46 −47 | |
| 165.3°+9.4° −10.0° | |
| Semi-amplitude | 49.7 ± 2 |
| Star | HD 196050 |
| Physical characteristics[2] | |
| Mass | 4.55+0.69 −0.72 MJ |
The planet was discovered by using Doppler spectroscopy by looking for shifts in the spectrum of the star. In Australia, Jones et al. found this planet in 2002 by using the telescope in Anglo-Australian Observatory.[1] In 2023, the inclination and true mass of HD 196050 b were determined via astrometry.[2]
See also
editReferences
edit- ^ a b Jones, Hugh R. A.; Paul Butler, R.; Marcy, Geoffrey W.; Tinney, Chris G.; Penny, Alan J.; McCarthy, Chris; Carter, Brad D. (2002). "Extrasolar planets around HD 196050, HD 216437 and HD 160691". Monthly Notices of the Royal Astronomical Society. 337 (4): 1170–1178. arXiv:astro-ph/0206216. Bibcode:2002MNRAS.337.1170J. doi:10.1046/j.1365-8711.2002.05787.x. S2CID 119520409.
- ^ 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.
- Greenhill; et al. (2002). "epsilon Eridani, upsilon Andromedae, 51 Pegasi, HD 209458, HD 196050". IAU Circ. 7985: 1. Bibcode:2002IAUC.7985....1G.
- Mugrauer; Neuhäuser, R.; Seifahrt, A.; Mazeh, T.; Guenther, E. (2005). "Four new wide binaries among exoplanet host stars". Astronomy and Astrophysics. 440 (3): 1051–1060. arXiv:astro-ph/0507101. Bibcode:2005A&A...440.1051M. doi:10.1051/0004-6361:20042297. S2CID 14065040.
External links
edit- "HD 196050". Exoplanets. Archived from the original on 2009-11-25. Retrieved 2008-11-01.
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