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Holmberg radius

subject fact

Holmberg radius has definition The radius of an external galaxy at which the surface brightness is 26.6 mag arcsec^-2. This criterion was developed by Holmberg in 1958 to estimate the actual dimensions of the major and minor axes of a galaxy without regard to its orientation in space. has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:33:26.0
is an instance of radius

length has unit length unit

number has value 2001-09-27 09:32:57.0

Holmberg radius	has definition The radius of an external galaxy at which the surface brightness is 26.6 mag arcsec^-2. This criterion was developed by Holmberg in 1958 to estimate the actual dimensions of the major and minor axes of a galaxy without regard to its orientation in space.
Holmberg radius	is an instance of radius
length	has unit length unit
number	has value