HD 81040 b
| Discovery | |
|---|---|
| Discovered by | Sozzetti et al.[1] |
| 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)[2] | |
| Eccentricity | 0.525+0.042 −0.024[2] |
| 2.7452+0.011 −0.0093 yr[2] | |
| Inclination | 73° or 107°[2] |
| 245511.1+10 −8.7[2] | |
| Semi-amplitude | 168 ± 9[1] |
| Star | HD 81040 |
| Physical characteristics | |
| Mass | 7.24+1.0 −0.37 MJ[2] |
HD 81040 b is a massive, gas giant planet that orbits the star HD 81040. The period is just over 1000 days. It has a semimajor axis of about 1.95 AU. The orbit is quite eccentric, at a little over 0.5 in value.[1]
Astrometry of HD 81040 has determined an orbital inclination of either 73° or 107°, depending on whether the solution is prograde or retrograde. This, combined with the minimum mass, gives a true mass of 7.24 MJ. Since the inclination is high, there is a small chance that the planet transits.[2]
See also[]
References[]
- ^ a b c Sozzetti, A.; et al. (2006). "A massive planet to the young disc star HD 81040". Astronomy and Astrophysics. 449 (1): 417–424. arXiv:astro-ph/0511679. Bibcode:2006A&A...449..417S. doi:10.1051/0004-6361:20054303.
- ^ a b c d e f g Li, Yiting; Brandt, Timothy D.; Brandt, G. Mirek; Dupuy, Trent J.; Michalik, Daniel; Jensen-Clem, Rebecca; Zeng, Yunlin; Faherty, Jacqueline; Mitra, Elena L. (2021). "Precise Masses and Orbits for Nine Radial-velocity Exoplanets". The Astronomical Journal. 162 (6): 266. arXiv:2109.10422. Bibcode:2021AJ....162..266L. doi:10.3847/1538-3881/ac27ab. S2CID 237592581.
Coordinates: 
09h 23m 47.0873s, +20° 21′ 52.034″
Categories:
- Leo (constellation)
- Giant planets
- Exoplanets discovered in 2005
- Exoplanets detected by radial velocity