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Saturn Opposition

May 30, 2016

Just a couple of weeks after Mars was at its dazzling best, another planet is ready to stage its brightest showing of the year.

Saturn, the second-largest planet in the solar system, will reach opposition on Friday night, standing opposite the Sun in the sky. That means it’ll rise at sunset and remain in the sky all night. It’ll also be closest to Earth shortly after opposition, so it’ll shine brightest for the year.

You don’t have to wait for Friday to see the planet, though. Look for it low in the southeast after darkness falls the next few nights, shining like a bright golden star. It’s well to the lower left of much brighter Mars, which is still putting on quite a show. The two arc low across the south during the night.

In all the night sky right now, only the Moon, Mars, Jupiter, and a couple of stars clearly outshine Saturn.

On the brightness scale that’s been in use for centuries, it’s peaking at magnitude zero. On this scale, the brighter the object, the lower its magnitude. Mars is shining at about minus two, which is about six times brighter than magnitude zero. On the other hand, the faintest objects visible to the unaided eye are at roughly magnitude six — about 250 times fainter than Saturn is right now.

The giant planet soon will begin a gradual fade. When it disappears in the Sun’s glare around Thanksgiving, it’ll be only about half as bright as it appears this week.

We’ll have more about Saturn tomorrow.


Script by Damond Benningfield

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