Sentence examples for third magnitude from inspiring English sources

It is of about third magnitude and lies in the northern constellation Lyra.

It lies in the constellation Hercules and is of about third magnitude, its brightness varying by about a magnitude every 128 days.

Also known as the Beehive or M44 from its place in Messier's catalogue, Praesepe appears as a third magnitude circular glow to the naked eye, while binoculars reveal its brighter stars.

On Feb. 23 , 1987 a blue supergiant star brightened to gradually become third magnitude, easily visible at night, and it has subsequently been followed in every wavelength band available to scientists.

A star of the first magnitude is about 2.5 times as bright as one of the second magnitude, which in turn is some 2.5 times as bright as one of the third magnitude, and so on.

Tucana is not a prominent constellation as all of its stars are third magnitude or fainter; the brightest is Alpha Tucanae with an apparent visual magnitude of 2.87.

That, Taylor ruled, was a "blunder of the first magnitude".

Magnitudes are now defined such that a first-magnitude star is 100 times brighter than a star of sixth magnitude.

Since then it has varied irregularly about the seventh magnitude.

A star of the first magnitude is therefore 2.55 or 100 times as bright as one of the sixth magnitude.

"Failure to give that order," Taylor wrote, "was a blunder of the first magnitude".