HD 196050 b

HD 196050 b

Discovery [1]
Discovered by	Jones et al.
Discovery site	Anglo-Australian Observatory
Discovery date	13 June 2002
Detection method	Doppler spectroscopy (AAT)
Orbital characteristics [2]
Semi-major axis	2.585+0.032 −0.035  AU
Eccentricity	0.178±0.011
Orbital period (sidereal)	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°
Longitude of ascending node	15.2°+157.0° −9.2°
Time of periastron	2456307+46 −47
Argument of periastron	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

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.

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

• HD 190228 b
• HD 195019 b

References

1. 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.
2. 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

• "HD 196050". Exoplanets. Archived from the original on 2009-11-25. Retrieved 2008-11-01.