Equatorial coordinate system (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Equatorial coordinate system" in English language version.

refsWebsite

Global rank English rank

6^th place

3^rd place

archive.org (Global: 6^th place; English: 6^th place)

Nautical Almanac Office, U.S. Naval Observatory; H.M. Nautical Almanac Office; Royal Greenwich Observatory (1961). Explanatory Supplement to the Astronomical Ephemeris and the American Ephemeris and Nautical Almanac. H.M. Stationery Office, London (reprint 1974). pp. 24, 26.
Peter Duffett-Smith (1988). Practical Astronomy with Your Calculator, third edition. Cambridge University Press. pp. 28–29. ISBN 0-521-35699-7.
Meir H. Degani (1976). Astronomy Made Simple. Doubleday & Company, Inc. p. 216. ISBN 0-385-08854-X.
Peter Duffett-Smith (1988). Practical Astronomy with Your Calculator, third edition. Cambridge University Press. pp. 34–36. ISBN 0-521-35699-7.