Apparent magnitude

http://astrothesaurus.org/uat/59

alt label
Visual magnitude
dcterms modified equal to or less than 2020-11-03T18:09:41.442Zequal to or more than 2020-11-03T18:09:41.442Z
broader
http://astrothesaurus.org/uat/999 original
narrower
59 original
definition A measure of a star's observed brightness (opposed to absolute magnitude); symbol m. It depends on the star's intrinsic brightness, its distance from the observer, and the amount of interstellar absorption. The brightest star Sirius has an apparent magnitude of -1.46, while the weakest stars visible with the naked eye in the most favorable observation conditions have magnitudes of about +6.5. The stars of magnitudes less than +23 are measured by professional observatories, whereas those of magnitudes less than +30 by a telescope such as the Hubble Space Telescope.
narrower
http://astrothesaurus.org/uat/1211 original
broader
59 original
http://astrothesaurus.org/uat/1224 original
broader
59 original
http://astrothesaurus.org/uat/1228 original
broader
59 original
http://astrothesaurus.org/uat/1238 original
broader
59 original
http://astrothesaurus.org/uat/1269 original
broader
59 original
http://astrothesaurus.org/uat/1724 original
broader
59 original
http://astrothesaurus.org/uat/1760 original
broader
59 original
http://astrothesaurus.org/uat/923 original
broader
59 original
type
Resource original
Concept original
contributor AAS_Frey.Katie original