Meet HD 3167 d, a fascinating world orbiting the star HD 3167, discovered back in 2017 using the radial velocity method from a collaboration of multiple ground-based observatories. This distant exoplanet is part of a system that’s intrigued astronomers for its unique orbital dynamics and diverse worlds. While it might not have a fancy nickname yet, HD 3167 d holds its own in the cosmic lineup, quietly orbiting its star at a distance that places it in a realm not quite like Earth’s neighborhood. Its discovery relied on the subtle gravitational tugs it exerts on HD 3167, detected by an array of sensitive instruments spread across observatories around the globe—making it a team effort in unraveling the mysteries of distant solar systems.
