Astronomy:HD 89744 b
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Short description: Eccentric Jupiter exoplanet orbiting the star HD 89744
| Discovery[1] | |
|---|---|
| Discovered by | Korzennik et al. |
| Discovery site | Whipple Observatory |
| Discovery date | 2000 |
| Doppler spectroscopy | |
| Orbital characteristics[2] | |
| 0.917±0.009 astronomical unit|AU | |
| Eccentricity | 0.677±0.003 |
| Orbital period | 256.78±0.02 d |
| 193.7±0.4 º | |
| Semi-amplitude | 269.66±1.45 m/s |
| Star | HD 89744 |
| Physical characteristics[2] | |
| Mass | ≥8.35±0.18 MJ |
HD 89744 b is an eccentric Jupiter extrasolar planet orbiting the star HD 89744.[1]
In a simulation of a 10 million year span, this planet swept away all test particles "except for a narrow region near the 8:3 resonance". There can be no planets in this star's habitable zone. Observation has ruled out any planet over 0.7 Jupiter mass within a year period.[3]
See also
References
- ↑ 1.0 1.1 Korzennik, Sylvain G. et al. (2000). "A High-Eccentricity Low-Mass Companion to HD 89744". The Astrophysical Journal Letters 533 (2): L147–L150. doi:10.1086/312611. PMID 10770711. Bibcode: 2000ApJ...533L.147K.
- ↑ 2.0 2.1 Wittenmyer, Robert A. et al. (2019). "Truly eccentric – I. Revisiting eight single-eccentric planetary systems". Monthly Notices of the Royal Astronomical Society 484 (4): 5859–5867. doi:10.1093/mnras/stz290. Bibcode: 2019MNRAS.484.5859W.
- ↑ Wittenmyer, Robert A. et al. (2007). "Dynamical and Observational Constraints on Additional Planets in Highly Eccentric Planetary Systems". The Astronomical Journal 134 (3): 1276–1284. doi:10.1086/520880. Bibcode: 2007AJ....134.1276W.
External links
Coordinates: 
10h 11m 10.5621s, +41° 13′ 46.308″
es:HD 89744#Sistema planetario
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