Scimago Journal & Country Rank

Monthly Notices of the Royal Astronomical Society: Letters


United Kingdom

Universities and research institutions in United Kingdom

Subject Area and Category


Oxford University Press



Publication type



17453925, 17453933





How to publish in this journal


For papers that merit urgent publication, MNRAS Letters, the online section of Monthly Notices of the Royal Astronomical Society, publishes short, topical and significant research in all fields of astronomy. Letters should be self-contained and describe the results of an original study whose rapid publication might be expected to have a significant influence on the subsequent development of research in the associated subject area. The 5-page limit must be respected. Authors are required to state their reasons for seeking publication in the form of a Letter when submitting their manuscript. Join the conversation about this journal

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.

Astronomy and Astrophysics2006Q1
Astronomy and Astrophysics2007Q1
Astronomy and Astrophysics2008Q1
Astronomy and Astrophysics2012Q1
Astronomy and Astrophysics2013Q1
Astronomy and Astrophysics2014Q1
Astronomy and Astrophysics2015Q1
Astronomy and Astrophysics2016Q1
Astronomy and Astrophysics2017Q1
Astronomy and Astrophysics2018Q1
Astronomy and Astrophysics2019Q1
Astronomy and Astrophysics2020Q1
Space and Planetary Science2006Q1
Space and Planetary Science2007Q1
Space and Planetary Science2008Q1
Space and Planetary Science2012Q1
Space and Planetary Science2013Q1
Space and Planetary Science2014Q1
Space and Planetary Science2015Q1
Space and Planetary Science2016Q1
Space and Planetary Science2017Q1
Space and Planetary Science2018Q1
Space and Planetary Science2019Q1
Space and Planetary Science2020Q1

The SJR is a size-independent prestige indicator that ranks journals by their 'average prestige per article'. It is based on the idea that 'all citations are not created equal'. SJR is a measure of scientific influence of 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 It measures the scientific influence of the average article in a journal, it expresses how central to the global scientific discussion an average article of the journal is.

Total Documents

Evolution of the number of published documents. All types of documents are considered, including citable and non citable documents.

Citations per document

This indicator counts the number of citations received by documents from a journal and divides them by the total number of documents published in that journal. The chart shows the evolution of the average number of times documents published in a journal in the past two, three and four years have been cited in the current year. The two years line is equivalent to journal impact factor ™ (Thomson Reuters) metric.

Cites per documentYearValue
Cites / Doc. (4 years)20050.000
Cites / Doc. (4 years)20065.495
Cites / Doc. (4 years)20075.080
Cites / Doc. (4 years)20083.962
Cites / Doc. (4 years)20114.224
Cites / Doc. (4 years)20124.541
Cites / Doc. (4 years)20134.247
Cites / Doc. (4 years)20144.115
Cites / Doc. (4 years)20154.225
Cites / Doc. (4 years)20164.203
Cites / Doc. (4 years)20178.535
Cites / Doc. (4 years)20188.592
Cites / Doc. (4 years)20198.656
Cites / Doc. (4 years)20207.975
Cites / Doc. (3 years)20050.000
Cites / Doc. (3 years)20065.495
Cites / Doc. (3 years)20075.080
Cites / Doc. (3 years)20083.962
Cites / Doc. (3 years)20114.415
Cites / Doc. (3 years)20124.778
Cites / Doc. (3 years)20134.363
Cites / Doc. (3 years)20144.313
Cites / Doc. (3 years)20154.403
Cites / Doc. (3 years)20164.450
Cites / Doc. (3 years)20179.190
Cites / Doc. (3 years)20189.013
Cites / Doc. (3 years)20198.759
Cites / Doc. (3 years)20208.254
Cites / Doc. (2 years)20050.000
Cites / Doc. (2 years)20065.495
Cites / Doc. (2 years)20075.080
Cites / Doc. (2 years)20084.018
Cites / Doc. (2 years)20114.545
Cites / Doc. (2 years)20124.755
Cites / Doc. (2 years)20134.604
Cites / Doc. (2 years)20144.329
Cites / Doc. (2 years)20154.665
Cites / Doc. (2 years)20164.844
Cites / Doc. (2 years)20179.703
Cites / Doc. (2 years)20188.993
Cites / Doc. (2 years)20199.265
Cites / Doc. (2 years)20208.938
Total Cites 

Evolution of the total number of citations and journal's self-citations received by a journal's published documents during the three previous years.
Journal Self-citation is defined as the number of citation from a journal citing article to articles published by the same journal.

Self Cites20050
Self Cites200630
Self Cites200741
Self Cites200857
Self Cites201166
Self Cites201270
Self Cites201359
Self Cites201453
Self Cites201552
Self Cites201693
Self Cites201794
Self Cites201855
Self Cites201953
Self Cites202068
Total Cites20050
Total Cites2006610
Total Cites20071265
Total Cites20081549
Total Cites20112446
Total Cites20122776
Total Cites20132474
Total Cites20142437
Total Cites20152413
Total Cites20162412
Total Cites20175431
Total Cites20185606
Total Cites20195448
Total Cites20205035
External Cites per Doc 
Cites per Doc

Evolution of the number of total citation per document and external citation per document (i.e. journal self-citations removed) received by a journal's published documents during the three previous years. External citations are calculated by subtracting the number of self-citations from the total number of citations received by the journal’s documents.

External Cites per document20050
External Cites per document200658.000
External Cites per document2007122.400
External Cites per document2008149.200
External Cites per document20110
External Cites per document201216.107
External Cites per document20138.564
External Cites per document20145.116
External Cites per document20154.971
External Cites per document20164.279
External Cites per document20179.030
External Cites per document20188.924
External Cites per document20198.674
External Cites per document20208.143
Cites per document20050.000
Cites per document20065.495
Cites per document20075.080
Cites per document20083.962
Cites per document20114.415
Cites per document20124.778
Cites per document20134.363
Cites per document20144.313
Cites per document20154.403
Cites per document20164.450
Cites per document20179.190
Cites per document20189.013
Cites per document20198.759
Cites per document20208.254
% International Collaboration

International Collaboration accounts for the articles that have been produced by researchers from several countries. The chart shows the ratio of a journal's documents signed by researchers from more than one country; that is including more than one country address.

YearInternational Collaboration
Citable documents 
Non-citable documents

Not every article in a journal is considered primary research and therefore "citable", this chart shows the ratio of a journal's articles including substantial research (research articles, conference papers and reviews) in three year windows vs. those documents other than research articles, reviews and conference papers.

Non-citable documents20050
Non-citable documents2006101
Non-citable documents2007239
Non-citable documents2008381
Non-citable documents2011554
Non-citable documents2012413
Non-citable documents2013285
Non-citable documents201499
Non-citable documents201573
Non-citable documents20160
Non-citable documents20170
Non-citable documents20180
Non-citable documents20190
Non-citable documents20200
Citable documents20050
Citable documents200610
Citable documents200710
Citable documents200810
Citable documents20110
Citable documents2012168
Citable documents2013282
Citable documents2014466
Citable documents2015475
Citable documents2016542
Citable documents2017591
Citable documents2018622
Citable documents2019622
Citable documents2020610
Cited documents 
Uncited documents

Ratio of a journal's items, grouped in three years windows, that have been cited at least once vs. those not cited during the following year.

Uncited documents20050
Uncited documents200612
Uncited documents200728
Uncited documents200857
Uncited documents201183
Uncited documents201272
Uncited documents201376
Uncited documents201485
Uncited documents201572
Uncited documents201687
Uncited documents201757
Uncited documents201851
Uncited documents201952
Uncited documents202077
Cited documents20050
Cited documents200699
Cited documents2007221
Cited documents2008334
Cited documents2011471
Cited documents2012509
Cited documents2013491
Cited documents2014480
Cited documents2015476
Cited documents2016455
Cited documents2017534
Cited documents2018571
Cited documents2019570
Cited documents2020533
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