233. Two more exoplanets: Gaia 4b and 5b

Today, NASA's Exoplanet Archive lists almost 6000 confirmed exoplanets. There are only five astrometric discoveries amongst them, with one found from VLT-FORS, and one from radio VLBA. The first Gaia astrometric discovery, HIP 66074, was reported in 2023. Here I describe the two latest discoveries, Gaia 4b and Gaia 5b. And I explain why the numbers discovered with Gaia are still rather small.

Publication Details

Journal
Zenodo (CERN European Organization for Nuclear Research)
Published
2025-06-16
DOI
https://doi.org/10.5281/zenodo.15661602
Primary Topic
Astronomy and Astrophysical Research
Type
article
Field-Weighted Citation Impact
0.00
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article

233. Two more exoplanets: Gaia 4b and 5b

Zenodo (CERN European Organization for Nuclear Research)
Astronomy and Astrophysical Research
article

233. Two more exoplanets: Gaia 4b and 5b

article en

Abstract

Today, NASA's Exoplanet Archive lists almost 6000 confirmed exoplanets. There are only five astrometric discoveries amongst them, with one found from VLT-FORS, and one from radio VLBA. The first Gaia astrometric discovery, HIP 66074, was reported in 2023. Here I describe the two latest discoveries, Gaia 4b and Gaia 5b. And I explain why the numbers discovered with Gaia are still rather small.

Zenodo (CERN European Organization for Nuclear Research)
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Astronomy and Astrophysical Research
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233. Two more exoplanets: Gaia 4b and 5b · Zenodo (CERN European Organization for Nuclear Research) (2025) | TGRS Research Map | TGRS