Scimago Journal & Country Rank

Astrophysical Journal


United States

Universities and research institutions in United States

Subject Area and Category


IOP Publishing Ltd.



Publication type



0004637X, 15384357





How to publish in this journal


The Astrophysical Journal is devoted to recent developments, discoveries, and theories in astronomy and astrophysics. Publications in ApJ constitute significant new research that is directly relevant to astrophysical applications, whether based on observational results or on theoretical insights or modeling. 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)19994.359
Cites / Doc. (4 years)20004.170
Cites / Doc. (4 years)20013.901
Cites / Doc. (4 years)20024.474
Cites / Doc. (4 years)20034.340
Cites / Doc. (4 years)20044.502
Cites / Doc. (4 years)20054.597
Cites / Doc. (4 years)20065.298
Cites / Doc. (4 years)20075.434
Cites / Doc. (4 years)20084.802
Cites / Doc. (4 years)20096.022
Cites / Doc. (4 years)20105.808
Cites / Doc. (4 years)20115.913
Cites / Doc. (4 years)20126.304
Cites / Doc. (4 years)20136.010
Cites / Doc. (4 years)20145.963
Cites / Doc. (4 years)20155.730
Cites / Doc. (4 years)20165.595
Cites / Doc. (4 years)20175.158
Cites / Doc. (4 years)20185.276
Cites / Doc. (4 years)20194.915
Cites / Doc. (3 years)19994.359
Cites / Doc. (3 years)20004.403
Cites / Doc. (3 years)20014.156
Cites / Doc. (3 years)20024.528
Cites / Doc. (3 years)20034.405
Cites / Doc. (3 years)20044.571
Cites / Doc. (3 years)20054.868
Cites / Doc. (3 years)20065.802
Cites / Doc. (3 years)20075.633
Cites / Doc. (3 years)20085.115
Cites / Doc. (3 years)20096.196
Cites / Doc. (3 years)20105.958
Cites / Doc. (3 years)20116.057
Cites / Doc. (3 years)20126.524
Cites / Doc. (3 years)20136.199
Cites / Doc. (3 years)20146.066
Cites / Doc. (3 years)20155.966
Cites / Doc. (3 years)20165.752
Cites / Doc. (3 years)20175.150
Cites / Doc. (3 years)20185.319
Cites / Doc. (3 years)20194.981
Cites / Doc. (2 years)19994.582
Cites / Doc. (2 years)20004.576
Cites / Doc. (2 years)20014.195
Cites / Doc. (2 years)20024.559
Cites / Doc. (2 years)20034.349
Cites / Doc. (2 years)20044.807
Cites / Doc. (2 years)20055.335
Cites / Doc. (2 years)20065.833
Cites / Doc. (2 years)20076.115
Cites / Doc. (2 years)20085.248
Cites / Doc. (2 years)20096.254
Cites / Doc. (2 years)20105.974
Cites / Doc. (2 years)20116.252
Cites / Doc. (2 years)20126.532
Cites / Doc. (2 years)20136.173
Cites / Doc. (2 years)20146.255
Cites / Doc. (2 years)20156.080
Cites / Doc. (2 years)20165.682
Cites / Doc. (2 years)20175.144
Cites / Doc. (2 years)20185.242
Cites / Doc. (2 years)20194.978
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 Cites199911116
Self Cites200011864
Self Cites200112253
Self Cites200212806
Self Cites200313905
Self Cites200413839
Self Cites200513784
Self Cites200615539
Self Cites200715712
Self Cites200812586
Self Cites200922286
Self Cites201018464
Self Cites201117090
Self Cites201219692
Self Cites201318077
Self Cites201417282
Self Cites201517590
Self Cites201617319
Self Cites201715615
Self Cites201815831
Self Cites201916202
Total Cites199928135
Total Cites200028795
Total Cites200127794
Total Cites200234787
Total Cites200337314
Total Cites200439614
Total Cites200541115
Total Cites200646773
Total Cites200746476
Total Cites200841946
Total Cites200952388
Total Cites201054716
Total Cites201153461
Total Cites201255103
Total Cites201349868
Total Cites201451148
Total Cites201552176
Total Cites201649868
Total Cites201745147
Total Cites201847629
Total Cites201944501
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 document19992.637
External Cites per document20002.589
External Cites per document20012.324
External Cites per document20022.861
External Cites per document20032.764
External Cites per document20042.974
External Cites per document20053.236
External Cites per document20063.875
External Cites per document20073.729
External Cites per document20083.580
External Cites per document20093.560
External Cites per document20103.948
External Cites per document20114.120
External Cites per document20124.193
External Cites per document20133.952
External Cites per document20144.016
External Cites per document20153.954
External Cites per document20163.755
External Cites per document20173.369
External Cites per document20183.551
External Cites per document20193.167
Cites per document19994.359
Cites per document20004.403
Cites per document20014.156
Cites per document20024.528
Cites per document20034.405
Cites per document20044.571
Cites per document20054.868
Cites per document20065.802
Cites per document20075.633
Cites per document20085.115
Cites per document20096.196
Cites per document20105.958
Cites per document20116.057
Cites per document20126.524
Cites per document20136.199
Cites per document20146.066
Cites per document20155.966
Cites per document20165.752
Cites per document20175.150
Cites per document20185.319
Cites per document20194.981
% 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 documents200333
Non-citable documents200470
Non-citable documents2005108
Non-citable documents200699
Non-citable documents200796
Non-citable documents2008101
Non-citable documents2009126
Non-citable documents2010130
Non-citable documents2011124
Non-citable documents2012110
Non-citable documents2013111
Non-citable documents2014123
Non-citable documents2015156
Non-citable documents2016167
Non-citable documents2017168
Non-citable documents2018160
Non-citable documents2019142
Citable documents19996455
Citable documents20006540
Citable documents20016688
Citable documents20027682
Citable documents20038470
Citable documents20048666
Citable documents20058446
Citable documents20068061
Citable documents20078251
Citable documents20088201
Citable documents20098455
Citable documents20109183
Citable documents20118827
Citable documents20128446
Citable documents20138045
Citable documents20148432
Citable documents20158746
Citable documents20168669
Citable documents20178766
Citable documents20188955
Citable documents20198935
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 documents19991097
Uncited documents20001000
Uncited documents20011180
Uncited documents20021576
Uncited documents20032216
Uncited documents20042202
Uncited documents20051991
Uncited documents20061312
Uncited documents20071270
Uncited documents20081097
Uncited documents2009919
Uncited documents20101073
Uncited documents20111019
Uncited documents2012892
Uncited documents2013816
Uncited documents2014932
Uncited documents20151014
Uncited documents20161082
Uncited documents20171204
Uncited documents20181145
Uncited documents20191250
Cited documents19995358
Cited documents20005540
Cited documents20015508
Cited documents20026106
Cited documents20036287
Cited documents20046534
Cited documents20056563
Cited documents20066848
Cited documents20077077
Cited documents20087205
Cited documents20097662
Cited documents20108240
Cited documents20117932
Cited documents20127664
Cited documents20137340
Cited documents20147623
Cited documents20157888
Cited documents20167754
Cited documents20177730
Cited documents20187970
Cited documents20197827
Scimago Journal & Country Rank
Show this widget in your own website

Just copy the code below and paste within your html code:
Metrics based on Scopus® data as of April 2020
Loading comments…

Leave a comment

* Required

* Required

* Required

* Required

The users of Scimago Journal & Country Rank have the possibility to dialogue through comments linked to a specific journal. The purpose is to have a forum in which general doubts about the processes of publication in the journal, experiences and other issues derived from the publication of papers are resolved. For topics on particular articles, maintain the dialogue through the usual channels with your editor.

Developed by:
Scimago Lab
Powered by:
Powered by scopus

Follow us on @ScimagoJR

Scimago Lab, Copyright 2007-2020. Data Source: Scopus®