Unveiling the Secrets of WASP-18 b: A Deep Dive into Exoplanet Orbits and the Mystery of a Missing World

Star system: WASP 18 | Distance from the Sun: 400 light years

Scientists have taken a closer look at an exoplanet called WASP-18 b, refining its orbit and investigating whether a second planet, WASP-18 c, truly exists.

Using a vast amount of data from various telescopes and databases, they precisely measured WASP-18 b's orbit and its timing. This high-precision data is crucial for detecting any subtle changes in its orbit over time.

Additionally, they analyzed numerous measurements of radial velocity, which can reveal the gravitational tug of other planets. However, they found no strong evidence to support the presence of WASP-18 c. The signals previously thought to indicate its existence were not consistent across different datasets.

This research significantly improves our understanding of the WASP-18 system, confirming the orbit of WASP-18 b and suggesting that WASP-18 c is likely not real. This work provides a valuable foundation for future observations.

Scientific study

Orbit Refinement of WASP-18 b and Evidence Against the Existence of WASP-18 c (external link)