Astronomy:HD 81040 b
From HandWiki
 Radial velocity curve of HD 81040 b[1] | |
| Discovery | |
|---|---|
| Discovered by | Sozzetti et al.[2] |
| Discovery site | Observatoire de Haute-Provence in France |
| Discovery date | November 24, 2005 |
| Doppler Spectroscopy | |
| Orbital characteristics | |
| 1.946 ± 0.014 AU (291,100,000 ± 2,100,000 km)[3] | |
| Eccentricity | 0.525+0.024 −0.026[3] |
| Orbital period | 1,004.7 ± 3.0 days (2.7507 ± 0.0082 years)[4] |
| Inclination | 111.4°+4.4° −4.7°[4] |
| Longitude of ascending node | 19.2°+5.0° −4.8°[4] |
| astron|astron|helion}} | 245511.1+10 −8.7[3] |
| 73.1°±4.3°[4] | |
| Semi-amplitude | 168 ± 9[2] |
| Star | HD 81040 |
| Physical characteristics | |
| Mass | 7.53±0.032 Jupiter mass[4] |
HD 81040 b is a massive gas giant exoplanet that orbits the star HD 81040, discovered in 2005 by radial velocity.[2] Its orbital period is just over 1000 days. It has a semimajor axis of about 1.95 AU, and its orbit is quite eccentric, at a little over 0.5.[3][4]
Astrometry of HD 81040 using Gaia, published in several papers, has determined an orbital inclination of about 111°. This, combined with the minimum mass, gives a true mass of 7.53 |♃|J}}}}}}.[3][1][5][6][4] Since the inclination is high, there is a small chance that the planet transits.[3]
Astrometric orbit of HD 81040 b[1]
See also
References
- ↑ 1.0 1.1 1.2 "Image of the Week: Astrometric Orbit of the Exoplanet-Host Star HD81040". ESA/Gaia/DPAC/CU4-CU3. 31 January 2022. https://www.cosmos.esa.int/web/gaia/iow_20220131.
- ↑ 2.0 2.1 2.2 Sozzetti, A. et al. (2006). "A massive planet to the young disc star HD 81040". Astronomy and Astrophysics 449 (1): 417–424. doi:10.1051/0004-6361:20054303. Bibcode: 2006A&A...449..417S. http://www.aanda.org/articles/aa/full/2006/13/aa4303-05/aa4303-05.html.
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 Li, Yiting; Brandt, Timothy D.; Brandt, G. Mirek; Dupuy, Trent J.; Michalik, Daniel; Jensen-Clem, Rebecca; Zeng, Yunlin; Faherty, Jacqueline et al. (2021). "Precise Masses and Orbits for Nine Radial-velocity Exoplanets". The Astronomical Journal 162 (6): 266. doi:10.3847/1538-3881/ac27ab. Bibcode: 2021AJ....162..266L.
- ↑ 4.0 4.1 4.2 4.3 4.4 4.5 4.6 Winn, Joshua N. (September 2022). "Joint Constraints on Exoplanetary Orbits from Gaia DR3 and Doppler Data". The Astronomical Journal 164 (5): 196. doi:10.3847/1538-3881/ac9126. Bibcode: 2022AJ....164..196W.
- ↑ Gaia Collaboration et al. (2023). "Gaia Data Release 3". Astronomy & Astrophysics 674: A34. doi:10.1051/0004-6361/202243782.
- ↑ Feng, Fabo et al. (August 2022). "3D Selection of 167 Substellar Companions to Nearby Stars". The Astrophysical Journal Supplement Series 262 (21): 21. doi:10.3847/1538-4365/ac7e57. Bibcode: 2022ApJS..262...21F.
Coordinates: 
09h 23m 47.0873s, +20° 21′ 52.034″
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