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Usage

• 9 663Downloads 2022
  Springer measures the usage on the SpringerLink platform according to the COUNTER (Counting Online Usage of NeTworked Electronic Resources) standards.
• 37 Usage Factor 2021/2022
  The Springer Journal Usage Factor 2021/2022 was calculated as suggested by the COUNTER Code of Practice for Usage Factors. It is the median value of the number of downloads in 2021/2022 for all articles published online in that particular journal during the same time period. The Usage Factor calculation is based on COUNTER-compliant usage data on the SpringerLink platform. (Counting Online Usage of NeTworked Electronic Resources) standards.

Impact

• 1.194 Impact Factor 2021
  Journal Impact Factors are published each summer by Thomson Reuters via Journal Citation Reports ®. Impact Factors and ranking data are presented for the preceding calendar year.
• 0.56Source Normalized Impact per Paper (SNIP) 2021
  Source Normalized Impact per Paper (SNIP) measures contextual citation impact by weighting citations based on the total number of citations in a subject field. The impact of a single citation is given higher value in subject areas where citations are less likely, and vice versa.
• Q3Quartile: Astronomy and Astrophysics 2021
  The set of journals have been ranked according to their SJR and divided into four equal groups, four quartiles. Q1 (green) comprises the quarter of the journals with the highest values, Q2 (yellow) the second highest values, Q3 (orange) the third highest values and Q4 (red) the lowest values.
• 0.43 SCImago Journal Rank (SJR) 2021
  SCImago Journal Rank (SJR) is a measure of scientific influence of scholarly journals that accounts for both the number of citations received by a journal and the importance or prestige of the journals where such citations come from.
• 42H-Index 2021
  A journal has an H index of h if it published h papers each of which has been cited in other journals at least h times. Calculations are based on Scopus.

Astronomy Letters  is an international peer reviewed journal that publishes the results of original research on all aspects of modern astronomy and astrophysics including high energy astrophysics, cosmology, space astronomy, theoretical astrophysics, radio astronomy, extragalactic astronomy, stellar astronomy, and investigation of the Solar system. The journal welcomes manuscripts from all countries.

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Queries about submission issues, peer review process, or the status of your manuscript should be sent to the Editorial Office of Astronomy Letters: letters@pleiadesonline.com