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The catalogue includes essentially all galaxies north of declination -02°30' and to a limiting diameter of 1.0
Uppsala
Uppsala (, or all ending in , ; archaically spelled ''Upsala'') is the county seat of Uppsala County and the fourth-largest city in Sweden, after Stockholm, Gothenburg, and Malmö. It had 177,074 inhabitants in 2019.
Located north of the c ...
General Catalogue of Galaxies (UGC) is a catalogue of 12,921 galaxies visible from the northern hemisphere. It was first published in 1973.
The catalogue includes essentially all galaxies north of declination -02°30' and to a limiting diameter of 1.0 arcminute
A minute of arc, arcminute (arcmin), arc minute, or minute arc, denoted by the symbol , is a unit of angular measurement equal to of one degree. Since one degree is of a turn (or complete rotation), one minute of arc is of a turn. The n ...
or to a limiting apparent magnitude
Apparent magnitude () is a measure of the brightness of a star or other astronomical object observed from Earth. An object's apparent magnitude depends on its intrinsic luminosity, its distance from Earth, and any extinction of the object's ...
of 14.5. The primary source of data is the blue prints of the Palomar Observatory Sky Survey
Palomar may refer to:
Places
* Any of several locations in San Diego County, California:
** Palomar Mountain
** Palomar Observatory, located on Palomar Mountain
** Palomar College in San Marcos, California
** Palomar Medical Center in Escondido, ...
(POSS). It also includes galaxies smaller than 1.0 arcminute
A minute of arc, arcminute (arcmin), arc minute, or minute arc, denoted by the symbol , is a unit of angular measurement equal to of one degree. Since one degree is of a turn (or complete rotation), one minute of arc is of a turn. The n ...
in diameter but brighter than 14.5 magnitude from the Catalogue of Galaxies and of Clusters of Galaxies
The Catalogue of Galaxies and of Clusters of Galaxies (or CGCG) was compiled by Fritz Zwicky in 1961–68. It contains 29,418 galaxies and 9,134 galaxy clusters.
Gallery
File:I Zwicky 18a.jpg, I Zwicky 18
File:Galaxy I Zwicky 32.jpeg, I Zwicky 3 ...
(CGCG).
The catalogue contains descriptions of the galaxies and their surrounding areas, plus conventional system classifications and position angles for flattened galaxies. Galaxy diameters are included and the classifications and descriptions are given in such a way as to provide as accurate an account as possible of the appearance of the galaxies on the prints. The accuracy of coordinates is only what is necessary for identifications purposes.
Addendum
There is an addendum to the catalogue called Uppsala General Catalogue Addendum which is abbreviated as UGCA.See also
* :UGC objects *Uppsala
Uppsala (, or all ending in , ; archaically spelled ''Upsala'') is the county seat of Uppsala County and the fourth-largest city in Sweden, after Stockholm, Gothenburg, and Malmö. It had 177,074 inhabitants in 2019.
Located north of the c ...
* Uppsala Astronomical Observatory
The Uppsala Astronomical Observatory (UAO), Astronomiska observatoriet i Uppsala) is the oldest astronomical observatory in Sweden. It was founded in 1741, though there was a professorial chair of astronomy at the University of Uppsala from 1593 ...
* Royal Society of Sciences in Uppsala
The Royal Society of Sciences in Uppsala ( sv, Kungliga Vetenskaps-Societeten i Uppsala), is the oldest of the royal academies in Sweden, having been founded in 1710. The society has, by royal decree of 1906, 50 Swedish fellows and 100 foreign. ...
References
Astronomical catalogues of galaxies * 1973 documents 1973 in science External linksUGC - Uppsala General Catalog of Galaxies
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