14 Herculis - Planetary System

Planetary System

In 1998 an extrasolar planet was discovered to orbit 14 Herculis, which received the designation 14 Herculis b. The planet is located in an eccentric, long-period orbit which takes around 4.8 years to complete. In 2005, a possible second planet was proposed, designated 14 Herculis c. The parameters of this planet are uncertain, but a recent analysis suggests it may lie in the 4:1 resonance with the inner planet, with an orbital period of almost 19 years at an orbital distance of 6.9 AU.

The 14 Herculis system
Companion
Mass Semimajor axis
Orbital period
Eccentricity Radius
b ≥4.64 ± 0.19 MJ 2.77 ± 0.05 1773.4 ± 2.5 0.369 ± 0.005
c ≥2.1 MJ 6.9 6906 ± 70 0 (fixed)

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