Scimago Journal & Country Rank

Astronomical Journal


United States

Universities and research institutions in United States

Subject Area and Category


IOP Publishing Ltd.



Publication type



00046256, 15383881


1987, 1989-2020



How to publish in this journal


The Astronomical Journal publishes original astronomical research, with an emphasis on significant scientific results derived from observations. Publications in AJ include descriptions of data capture, surveys, analysis techniques, astronomical interpretation, instrumentation, and software and computing. 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 Astrophysics1999Q1
Astronomy and Astrophysics2000Q1
Astronomy and Astrophysics2001Q1
Astronomy and Astrophysics2002Q1
Astronomy and Astrophysics2003Q1
Astronomy and Astrophysics2004Q1
Astronomy and Astrophysics2005Q1
Astronomy and Astrophysics2006Q1
Astronomy and Astrophysics2007Q1
Astronomy and Astrophysics2008Q1
Astronomy and Astrophysics2009Q1
Astronomy and Astrophysics2010Q1
Astronomy and Astrophysics2011Q1
Astronomy and Astrophysics2012Q1
Astronomy and Astrophysics2013Q1
Astronomy and Astrophysics2014Q1
Astronomy and Astrophysics2015Q1
Astronomy and Astrophysics2016Q1
Astronomy and Astrophysics2017Q1
Astronomy and Astrophysics2018Q1
Astronomy and Astrophysics2019Q1
Space and Planetary Science1999Q1
Space and Planetary Science2000Q1
Space and Planetary Science2001Q1
Space and Planetary Science2002Q1
Space and Planetary Science2003Q1
Space and Planetary Science2004Q1
Space and Planetary Science2005Q1
Space and Planetary Science2006Q1
Space and Planetary Science2007Q1
Space and Planetary Science2008Q1
Space and Planetary Science2009Q1
Space and Planetary Science2010Q1
Space and Planetary Science2011Q1
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

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.

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)19993.640
Cites / Doc. (4 years)20003.577
Cites / Doc. (4 years)20013.389
Cites / Doc. (4 years)20024.340
Cites / Doc. (4 years)20034.452
Cites / Doc. (4 years)20044.942
Cites / Doc. (4 years)20055.009
Cites / Doc. (4 years)20065.412
Cites / Doc. (4 years)20074.674
Cites / Doc. (4 years)20083.947
Cites / Doc. (4 years)20094.797
Cites / Doc. (4 years)20104.547
Cites / Doc. (4 years)20114.246
Cites / Doc. (4 years)20124.811
Cites / Doc. (4 years)20134.249
Cites / Doc. (4 years)20144.534
Cites / Doc. (4 years)20154.464
Cites / Doc. (4 years)20164.201
Cites / Doc. (4 years)20173.979
Cites / Doc. (4 years)20184.703
Cites / Doc. (4 years)20194.551
Cites / Doc. (3 years)19993.640
Cites / Doc. (3 years)20003.634
Cites / Doc. (3 years)20013.694
Cites / Doc. (3 years)20024.326
Cites / Doc. (3 years)20034.765
Cites / Doc. (3 years)20045.216
Cites / Doc. (3 years)20055.245
Cites / Doc. (3 years)20065.395
Cites / Doc. (3 years)20074.569
Cites / Doc. (3 years)20084.015
Cites / Doc. (3 years)20094.826
Cites / Doc. (3 years)20104.301
Cites / Doc. (3 years)20114.485
Cites / Doc. (3 years)20124.674
Cites / Doc. (3 years)20134.353
Cites / Doc. (3 years)20144.245
Cites / Doc. (3 years)20154.615
Cites / Doc. (3 years)20164.211
Cites / Doc. (3 years)20173.863
Cites / Doc. (3 years)20184.882
Cites / Doc. (3 years)20194.820
Cites / Doc. (2 years)19993.700
Cites / Doc. (2 years)20003.816
Cites / Doc. (2 years)20013.560
Cites / Doc. (2 years)20024.447
Cites / Doc. (2 years)20034.964
Cites / Doc. (2 years)20045.448
Cites / Doc. (2 years)20055.227
Cites / Doc. (2 years)20064.915
Cites / Doc. (2 years)20074.747
Cites / Doc. (2 years)20084.071
Cites / Doc. (2 years)20094.323
Cites / Doc. (2 years)20104.494
Cites / Doc. (2 years)20114.206
Cites / Doc. (2 years)20124.770
Cites / Doc. (2 years)20133.966
Cites / Doc. (2 years)20144.239
Cites / Doc. (2 years)20154.712
Cites / Doc. (2 years)20163.875
Cites / Doc. (2 years)20173.875
Cites / Doc. (2 years)20185.143
Cites / Doc. (2 years)20195.003
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 Cites19991187
Self Cites20001194
Self Cites20011456
Self Cites20021395
Self Cites20031428
Self Cites20041604
Self Cites20051362
Self Cites20061281
Self Cites2007959
Self Cites2008871
Self Cites2009861
Self Cites2010645
Self Cites2011781
Self Cites2012586
Self Cites2013549
Self Cites2014479
Self Cites2015573
Self Cites2016581
Self Cites2017780
Self Cites20181405
Self Cites20191418
Total Cites19995038
Total Cites20005109
Total Cites20015368
Total Cites20026493
Total Cites20037257
Total Cites20047908
Total Cites20057920
Total Cites20067871
Total Cites20076639
Total Cites20085532
Total Cites20096486
Total Cites20105329
Total Cites20115203
Total Cites20125352
Total Cites20134806
Total Cites20144525
Total Cites20154444
Total Cites20164325
Total Cites20174172
Total Cites20186483
Total Cites20196998
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 document19992.783
External Cites per document20002.784
External Cites per document20012.692
External Cites per document20023.396
External Cites per document20033.827
External Cites per document20044.158
External Cites per document20054.343
External Cites per document20064.517
External Cites per document20073.909
External Cites per document20083.382
External Cites per document20094.185
External Cites per document20103.780
External Cites per document20113.812
External Cites per document20124.162
External Cites per document20133.856
External Cites per document20143.795
External Cites per document20154.020
External Cites per document20163.646
External Cites per document20173.141
External Cites per document20183.824
External Cites per document20193.843
Cites per document19993.640
Cites per document20003.634
Cites per document20013.694
Cites per document20024.326
Cites per document20034.765
Cites per document20045.216
Cites per document20055.245
Cites per document20065.395
Cites per document20074.569
Cites per document20084.015
Cites per document20094.826
Cites per document20104.301
Cites per document20114.485
Cites per document20124.674
Cites per document20134.353
Cites per document20144.245
Cites per document20154.615
Cites per document20164.211
Cites per document20173.863
Cites per document20184.882
Cites per document20194.820
% 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 documents19990
Non-citable documents20000
Non-citable documents20010
Non-citable documents20020
Non-citable documents20038
Non-citable documents200417
Non-citable documents200522
Non-citable documents200622
Non-citable documents200730
Non-citable documents200834
Non-citable documents200934
Non-citable documents201023
Non-citable documents201122
Non-citable documents201223
Non-citable documents201328
Non-citable documents201425
Non-citable documents201521
Non-citable documents201621
Non-citable documents201733
Non-citable documents201837
Non-citable documents201927
Citable documents19991384
Citable documents20001406
Citable documents20011453
Citable documents20021501
Citable documents20031523
Citable documents20041516
Citable documents20051510
Citable documents20061459
Citable documents20071453
Citable documents20081378
Citable documents20091344
Citable documents20101239
Citable documents20111160
Citable documents20121145
Citable documents20131104
Citable documents20141066
Citable documents2015963
Citable documents20161027
Citable documents20171080
Citable documents20181328
Citable documents20191452
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 documents1999295
Uncited documents2000273
Uncited documents2001279
Uncited documents2002241
Uncited documents2003237
Uncited documents2004234
Uncited documents2005256
Uncited documents2006230
Uncited documents2007267
Uncited documents2008289
Uncited documents2009229
Uncited documents2010226
Uncited documents2011216
Uncited documents2012199
Uncited documents2013253
Uncited documents2014234
Uncited documents2015198
Uncited documents2016246
Uncited documents2017258
Uncited documents2018245
Uncited documents2019278
Cited documents19991089
Cited documents20001133
Cited documents20011174
Cited documents20021260
Cited documents20031294
Cited documents20041299
Cited documents20051276
Cited documents20061251
Cited documents20071216
Cited documents20081123
Cited documents20091149
Cited documents20101036
Cited documents2011966
Cited documents2012969
Cited documents2013879
Cited documents2014857
Cited documents2015786
Cited documents2016802
Cited documents2017855
Cited documents20181120
Cited documents20191201
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