New research reveals a fourth planet in the Kepler-51 system, altering our understanding of this unique system with three known ultra-low density “super-puff” planets.
Researchers utilized a range of telescopes, including NASA’s James Webb Space Telescope, to detect unexpected transit timing variations that suggested the presence of an additional planet. This discovery adds complexity to the system’s dynamics and poses new questions about the formation and characteristics of these rare super-puff planets.
New Planet Discovered in Kepler-51 System
A team of researchers from Penn State and Osaka University has discovered that an unusual planetary system, known for its three ultra-low density “super-puff” planets, includes at least one more planet. While observing Kepler-51d, the third planet in the system, with NASA’s James Webb Space Telescope (JWST), the team encountered a surprise: the planet transited its star two hours earlier than predicted by existing models.
To solve the mystery, the researchers analyzed both new and archival data from a range of space- and ground-based telescopes. Their investigation led to a compelling explanation: a previously undetected fourth planet, whose gravitational influence affects the orbits of the other planets in the system.
This groundbreaking discovery is detailed in a paper published on December 3 in the Astronomical Journal. READ MORE...
