Astronomy:HD 213240 b
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Short description: Extrasolar planet in the constellation Grus
| Discovery[1] | |
|---|---|
| Discovered by | Santos et al. |
| Discovery site | Geneva Extrasolar Planet Search |
| Discovery date | April 4, 2001 |
| Doppler spectroscopy | |
| Orbital characteristics[2] | |
| 1.92±0.026 astronomical unit|AU | |
| Eccentricity | 0.4201+0.01 −0.0093 |
| Orbital period | 879±3 d 2.4071+0.008 −0.0083 yr |
| Average Orbital speed | 23.7 |
| Inclination | 63°+17° −20° or 117°+20° −17° |
| Longitude of ascending node | 145°+21° −121° |
| astron|astron|helion}} | 2455901±12 |
| 201.9°+1.4° −1.5° | |
| Semi-amplitude | 96.6 ± 2.0 |
| Star | HD 213240 |
| Physical characteristics[2] | |
| Mass | 5.21+1.5 −0.49 Jupiter mass |
HD 213240 b is an exoplanet located 134 light-years (41 parsecs) from the Solar System in the constellation of Grus. It is a gas giant orbiting the G-type star HD 213240.[3]
The planet was discovered in 2001 as part of the CORALIE[4] extra-solar planet search program. It was described in a 2001 publication by astronomers N. C. Santos, M. Mayor, D. Naef, F. Pepe, D. Queloz, S. Udry and M. Burnet of Observatoire de Genève, Switzerland.[1] Doppler spectroscopy was used. In 2023, the inclination and true mass of HD 213240 b were determined via astrometry.[2]
See also
- HD 212301 b
- Methods of detecting extrasolar planets
References
- ↑ 1.0 1.1 Santos, N. C. et al. (2001). "The CORALIE survey for southern extra-solar planets VI. New long period giant planets around HD 28185 and HD 213240". Astronomy and Astrophysics 379 (3): 999–1004. doi:10.1051/0004-6361:20011366. Bibcode: 2001A&A...379..999S. http://www.aanda.org/articles/aa/full/2001/45/aah3054/aah3054.html.
- ↑ 2.0 2.1 2.2 Xiao, Guang-Yao et al. (May 2023). "The Masses of a Sample of Radial-Velocity Exoplanets with Astrometric Measurements". Research in Astronomy and Astrophysics 23 (5): 055022. doi:10.1088/1674-4527/accb7e. Bibcode: 2023RAA....23e5022X.
- ↑ "HD 213240". NASA. https://exoplanets.nasa.gov/exoplanet-catalog/6826/hd-213240-b/.
- ↑ "CORALIE". https://www.eso.org/public/usa/teles-instr/lasilla/swiss/coralie/.
External links
- "Notes for planet HD 213240 b". Extrasolar Planets Encyclopaedia. https://exoplanet.eu/catalog/hd_213240_b--97/. Retrieved 2008-08-29.
- "HD 213240". Exoplanets. http://media4.obspm.fr/exoplanets/base/etoile.php?nom=HD+213240.
Coordinates: 
22h 31m 00.3672s, −49° 25′ 59.773″
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