Some years before the angle of declination is about four degrees, a significant source of error on a seven-mile [ 11 km ] front &.
2.
Star names from these catalogues include the initials of which of the four catalogues they are from ( though the " Southern " follows the example of the " Bonner " and uses BD; CPD is often shortened to CP ), followed by the angle of declination of the star ( rounded towards zero, and thus ranging from + 00 to + 89 and-00 to-89 ), followed by an arbitrary number as there are always thousands of stars at each angle.
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