Arcseconds

Some articles on arcseconds, arcsecond:

Delta Serpentis - Properties
... The system consists of a pair of binary stars separated by 66 arcseconds ... A and B are separated by four arcseconds on the sky, and perform one orbit around their centre of mass once every 3200 years ... They are separated from each other by 4.4 arcseconds ...
Angular Diameter - Use in Astronomy
... these angular diameters are typically small, it is common to present them in arcseconds ... An arcsecond is 1/3600th of one degree, and a radian is 180/ degrees, so one radian equals 3600*180/ arcseconds, which is about 206265 arcseconds ... diameter of an object with visual diameter d at a distance D, expressed in arcseconds, is given by = 206265 d / D arcseconds ...
Chi Virginis
... At an angular separation of 173.1 arcseconds is a magnitude +9.1 star, which is of spectral type K0 ... A 10th magnitude star is located 221.2 arcseconds away, and the third is a magnitude +9.1 K2 star 321.2 arcseconds away ...
HD 72108
... It is a spectroscopic binary, whose components are separated by 0.176 arcseconds ... At a distance of 4 arcseconds away is the third component, the magnitude +7.7 HD 72108 B. 72108 C has an apparent magnitude of +9.3, and is 19 arcseconds from the primary ...
Mu Sagittarii
... from Polis A Polis A +3.84 - - Polis B +11.5 16.9 arcseconds 200 ... AU or 0.67 ly Polis C +13.5 25.8 arcseconds 500 ... AU or 1.02 ly Polis D +9.9 48.5 arcseconds ...