The Royal Astronomical Society is delighted to announce that the Impact Factor for its flagship journal Monthly Notices has increased from 4.8 to 5.2 in Clarivate's 2026 edition of Journal Citation Reports.
It now ranks in percentile 77.3 (Quartile 1) of the Astronomy & Astrophysics category.
Geophysical Journal International has also seen a pleasing increase in its Impact Factor, from 2.7 to 2.8, and continues to sit in Quartile 2 of its category. The CiteScores for both of the journals have also seen an increase for 2025 (the latest available metric), which now measure 10.7 and 5.8, respectively.
Excitingly, the Society's newest journal, RAS Techniques and Instruments, received its first Impact Factor since being accepted into Web of Science in 2025. The RAS is pleased to announce that RASTI's first Impact Factor is 2.5, placing it in percentile 54.1 (Quartile 2) of the Astronomy & Astrophysics category.
This first Impact Factor marks a great milestone for RASTI, one that compliments its CiteScore of 3.2.