HD 89744 b is an eccentric Jupiter extrasolar planet orbiting the star HD 89744.[1]
| Discovery[1] | |
|---|---|
| Discovered by | Korzennik et al. |
| Discovery site | Whipple Observatory |
| Discovery date | 2000 |
| Doppler spectroscopy | |
| Orbital characteristics[2] | |
| 0.917±0.009 AU | |
| Eccentricity | 0.677±0.003 |
| 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 |
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
editReferences
edit- ^ a b Korzennik, Sylvain G.; et al. (2000). "A High-Eccentricity Low-Mass Companion to HD 89744". The Astrophysical Journal Letters. 533 (2): L147–L150. arXiv:astro-ph/0003045. Bibcode:2000ApJ...533L.147K. doi:10.1086/312611. PMID 10770711.
- ^ a b 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. arXiv:1901.08471. Bibcode:2019MNRAS.484.5859W. doi:10.1093/mnras/stz290.
- ^ 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. arXiv:0706.1962. Bibcode:2007AJ....134.1276W. doi:10.1086/520880.
External links
edit- "HD 89744". Exoplanets. Archived from the original on 2012-03-04. Retrieved 2008-11-04.
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