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HD 87883 b
Discovery
Discovery date	August 13, 2009
Detection method	Radial velocity
Orbital characteristics
Apastron	6.48 AU (969,000,000 km)
Periastron	1.06 AU (159,000,000 km)
Semi-major axis	3.77+0.12; −0.094 AU
Eccentricity	0.720+0.038; −0.027
Orbital period (sidereal)	8.23+0.32; −0.34 yr
Inclination	16.8+1.7; −1.4 or 163.2+1.4; −1.7
Longitude of ascending node	109.9+4.0; −4.1
Time of periastron	2456913+17; −16
Argument of periastron	282.1±3.7
Star	HD 87883
Physical characteristics
Mass	6.31+0.31; −0.32

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]

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 M_J.^[1]

References

^ ^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.