HD 87883 b
HD 87883 b is an extrasolar planet which orbits the K-type main sequence star HD 87883, located approximately 59 light years away in the constellation Leo Minor. It is a long-period planet, taking 8.23 years to orbit the star at the average distance of 3.77 AU. However, this planet orbits in a very eccentric path, which ranges distance from as close as 1.06 AU to as far as 6.48 AU. This planet was detected by the radial velocity method on August 13, 2009.[2]
| Discovery | |
|---|---|
| Discovery date | August 13, 2009 |
| Radial velocity | |
| Orbital characteristics[1] | |
| Apastron | 6.48 AU (969,000,000 km) |
| Periastron | 1.06 AU (159,000,000 km) |
| 3.77+0.12 −0.094 AU | |
| Eccentricity | 0.720+0.038 −0.027 |
| 8.23+0.32 −0.34 yr | |
| Inclination | 16.8+1.7 −1.4 or 163.2+1.4 −1.7 |
| 109.9+4.0 −4.1 | |
| 2456913+17 −16 | |
| 282.1±3.7 | |
| Star | HD 87883 |
| Physical characteristics[1] | |
| Mass | 6.31+0.31 −0.32 |
Astrometry of HD 87883 has determined an orbital inclination of either 16.8° or 163.2°, depending on whether the solution is prograde or retrograde. This, combined with the minimum mass, gives a true mass of 6.31 MJ.[1]
References
- 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.
- Fischer, Debra; et al. (2009). "Five planets and an independent confirmation of HD 196885 Ab from Lick Observatory". The Astrophysical Journal. 703 (2): 1545–1556. arXiv:0908.1596. Bibcode:2009ApJ...703.1545F. doi:10.1088/0004-637X/703/2/1545. S2CID 15524804.
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