minute of arc

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  • noun

Synonyms for minute of arc

a unit of angular distance equal to a 60th of a degree

References in periodicals archive ?
Austin JM, Gallant JC, Van Niel T (2013) Mean monthly radiation surfaces for Australia at I arcsecond resolution.
8 arcseconds and will culminate a few minutes after midnight at an altitude of just under 61.
According to my measurements, as shown in Figure 2, Io and Europa are separated by 9 arcseconds.
In small telescopes M76 materializes as a rectangular object 80 arcseconds long--about the size of the famous Ring Nebula in Lyra.
The celebrated rings, which have been closing since 2003, are currently tilted 14[degrees] (with the south face visible) and appear 45 arcseconds wide.
I'm going to measure the Sun's deflection of starlight too, and to succeed I'll need to determine star positions accurate to a small fraction of an arcsecond, during only 140 seconds of totality, with no second chance if something goes wrong.
Aim your scope at Mercury around the 28th when its disk is nearly 8 arcseconds wide and shaped like the first-quarter Moon.
Viewed through a telescope in mid-July, Venus sports a 23% sunlit disk that measures 40 arcseconds from tip to tip.
This limitation wouldn't be so bad if it weren't for a second one: only a very tiny area of the sky around the star--up to about 30 arcseconds wide for images at near-infrared wavelengths--will have similar atmospheric turbulence.
Its gibbous disk is nearly 10 arcseconds wide--big enough to warrant attention from telescopic observers.
Mercury's perihelion precession, due to all causes, is about 574 arcseconds per century.
Its waxing gibbous disk, only 11 arcseconds wide, proves a small but increasingly alluring telescopic target.
1-magnitude bluish-white star 89 arcseconds to its northeast.
The Red Planet's disk is now about 13 arcseconds wide, which is large enough to invite telescopic scrutiny.
8, respectively, with a generous separation of 334 arcseconds between them.