A new super-Earth candidate found in the HD 93083 system

Star system: HD 93083 | Distance from the Sun: 92.9 light years

HD 93083 (Gliese 1137) is a orange star already known to host a Saturn-mass planet, HD 93083 b. In this study, scientists analyzed 13 years of precise spectroscopic data to search for new planets and improve our understanding of the known planet's properties.

The team refined the orbital parameters and minimum mass of HD 93083 b, providing a more accurate picture of this Saturn-mass exoplanet. In addition, they discovered a new planetary candidate: a super-Earth with a 9-day orbit and a minimum mass of just over five times that of Earth. This makes HD 93083 a multiple-planet system, with both a giant planet and a smaller, rocky world.

These results highlight the value of long-term observations for detecting new planets and improving measurements of known ones. The discovery of a super-Earth in this system adds to our understanding of the diversity of planetary systems around K-type stars.

Key findings
- A new super-Earth planet candidate was discovered orbiting HD 93083 every 9 days.
- The orbital parameters and minimum mass of the known planet HD 93083 b were refined.
- HD 93083 is now recognized as a multiple-planet system with both giant and rocky planets.

Scientific study

Long-period magnetic activity in the K dwarf GJ 1137 and a new super-Earth on a 9-day orbit (external link)