HD 87883 b is an extrasolar planet which orbits HD 87883, a K-type star on the main sequence, approximately 59 light years from Earth in the constellation of Leo Minor. It is a long-period planet, taking 8.23 years to orbit the star at the average distance of 3.77 AU in a very eccentric path, which ranges distance from 1.06 AU to 6.48 AU. It 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 (Jupiter masses).[1]
References
edit- ^ a b c 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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