Sentences with phrase «brightness by a factor»

Combining images from the various telescopes, an international team found that the asteroid varies in brightness by a factor of about 10 every 7.3 hours, matching its spin about its axis.

The surprise was that the light coming from it pulsed in brightness by a factor of 10 every 7.3 hours, suggesting both that it is spinning rapidly and is 10 times longer than it is wide — more elongated than anything known among our planets.

Mira, a similar but more extreme star in the constellation Cetus (low in the west at nightfall this month), can change in brightness by a factor of 1,500.

The team reported on arXiv.org on November 20 that IC 2497's heart is as bright as 50 billion to 100 billion suns, meaning it dropped in brightness by a factor of 50 in the past 100,000 years — a less dramatic drop than previously thought.

And that seems unlikely, since the source was seen to vary in brightness by a factor of seven in just a few hours.

Tucker Jones is discussing the lensing effect can cause galaxies to be magnified in apparent size and brightness by factors of more than 10.

Combining the images from the FORS instrument on the ESO telescope using four different filters with those of other large telescopes, a team of astronomers led by Karen Meech of the Institute for Astronomy in Hawaii found that «Oumuamua varies in brightness by a factor of 10 as it spins on its axis every 7.3 hours.

«So you reduce brightness by a factor not far from three.»

Not exact matches

Instead they found a persistent radio source whose strength varied randomly by a factor of three, often reaching levels that matched the initial brightness of the claimed afterglow.

If you moved Pluto twice as far from the sun, its apparent brightness would decrease by 2 to the 4th power — a factor of 16.