HD 121504 b is an exoplanet that is likely be slightly less massive than Jupiter. Although the radial velocity method that was used to detect the planet can only measure the minimum mass of the planet, it is very unlikely that its true mass would be much higher.
- ↑ (2004). The CORALIE survey for southern extra-solar planets XII. Orbital solutions for 16 extra-solar planets discovered with CORALIE. Astronomy and Astrophysics 415 (1): 391–402.
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