 | The angular diameter, angular size, apparent diameter, or apparent size is an angular distance describing how large a sphere or circle appears from a... 24 KB (1,767 words) - 03:31, 20 April 2024 |
In astronomy, angular diameter distance is a distance defined in terms of an object's physical size, x {\displaystyle x} , and its angular size, θ {\displaystyle... 6 KB (956 words) - 17:51, 29 April 2024 |
 | Galaxy (redirect from Isophotal diameter) the galaxy and its estimated distance, leading to an angular diameter (also called "metric diameter"). This type of measurement is subject to two significant... 164 KB (16,377 words) - 17:18, 27 April 2024 |
 | extrasolar star whose photosphere's angular size was measured in 1920, and subsequent studies have reported an angular diameter (i.e., apparent size) ranging... 172 KB (18,297 words) - 19:17, 3 May 2024 |
 | dominated by diffraction. In that case, the angular resolution of an optical system can be estimated (from the diameter of the aperture and the wavelength of... 20 KB (2,327 words) - 02:21, 10 March 2024 |
 | relating the diameter to the radius. Angular diameter – How large a sphere or circle appears Caliper, micrometer, tools for measuring diameters Conjugate... 8 KB (1,003 words) - 00:04, 6 May 2024 |
List of stars with resolved images (redirect from List of stellar angular diameters) magnetic fields of stars List of directly imaged exoplanets Angular resolution Angular diameter List of nearest stars and brown dwarfs H.Uitenbroek; Dupree... 19 KB (969 words) - 00:23, 12 May 2024 |
 | R Doradus (section Angular diameter) the diameter is 51.18±2.24 mas. The angular diameter of R Doradus is larger than any other measured star other than the Sun. The angular diameter of the... 14 KB (1,107 words) - 12:05, 18 December 2023 |
Distance measure (section Angular diameter distance) the transverse comoving distance the "angular size distance", which is not to be mistaken for the angular diameter distance. Occasionally, the symbols χ... 17 KB (2,495 words) - 17:03, 20 April 2024 |
 | describe small astronomical angles such as the angular diameters of planets (e.g. the angular diameter of Venus which varies between 10″ and 60″); the... 27 KB (3,331 words) - 03:26, 23 January 2024 |