KnowraAngular diameterLinked fromLinked fromThe 10 pages that link to Angular diameter, each with the reason it gives.All 10Related 9Compared with 1Angular resolutionRelated: It lets an object's apparent size be compared directly with an instrument's resolution.Stellar radiusRelated: Combining it with distance converts an apparent stellar size into a physical radius.Small-angle approximationRelated: For distant objects, the angle in radians is approximately width divided by distance.AltairRelated: Combining Altair's angular dimensions with its distance yields its physical size.AntaresRelated: Measuring Antares's angular diameter, alongside its distance, constrains its enormous physical size.VY Canis MajorisRelated: Combining its apparent size with its distance constrains its physical radius.Low surface brightness galaxyRelated: A large angular extent can lower a galaxy's brightness per apparent area.Minute and second of arcRelated: Arc minutes describe the apparent sizes of the Moon, planets, and other objects.StadimeterRelated: A stadimeter measures this angle to estimate the distance to a known-height object.