| Issue |
A&A
Volume 694, February 2025
|
|
|---|---|---|
| Article Number | A210 | |
| Number of page(s) | 7 | |
| Section | Planets, planetary systems, and small bodies | |
| DOI | https://doi.org/10.1051/0004-6361/202452563 | |
| Published online | 14 February 2025 | |
GJ 2126 b: A highly eccentric Jovian exoplanet
1
School of Physics and Astronomy, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University,
Tel Aviv
6997801,
Israel
2
Porter School of the Environment and Earth Sciences, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University,
Tel Aviv
6997801,
Israel
★ Corresponding author; avrahambinn@gmail.com
Received:
10
October
2024
Accepted:
28
January
2025
We report the discovery of GJ 2126 b, a highly eccentric (e = 0.85) Jupiter-like planet orbiting its host star every 272.7 days. The planet was detected and characterized using 112 radial velocity (RV) measurements from HARPS (High Accuracy Radial velocity Planet Searcher), provided by HARPS-RVBank. This planet orbits a low-mass star and ranks among the most eccentric exoplanets discovered, placing it in a unique region of the parameter space of the known exoplanet population. This makes it a valuable addition to the exoplanet demographics, helping to refine our understanding of planetary formation and evolution theories.
Key words: techniques: radial velocities / planets and satellites: detection / planets and satellites: fundamental parameters / stars: low-mass
© The Authors 2025
Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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