The Astrophysical Journal

*The Astrophysical Journal*
Discipline	Astronomy, Astrophysics
Language	English
Edited by	Ethan Vishniac
Publication details
History	1895–present
Publisher	IOP Publishing for the American Astronomical Society
Frequency	3/month
Open access	Hybrid and delayed
Impact factor	5.745 (Journal) ; 8.198 (Letters) ; 7.950 (Supplement) (2019)
ISO 4	Find out here
Indexing;
ISSN	0004-637X (print); 1538-4357 (web);
Links
	Journal homepage; The Astrophysical Journal Letters; The Astrophysical Journal Supplement Series;

The Astrophysical Journal, often abbreviated ApJ (pronounced "ap jay") in references and speech,^[1] is a peer-reviewed scientific journal of astrophysics and astronomy, started in 1895 by American astronomers George Ellery Hale and James Edward Keeler.

References