Arc to Arcturus, jump to Jupiter

Arc to Arcturus, jump to JupiterArc to Arcturus, jump to Jupiter

Arc to Arcturus, jump to Jupiter

The giant planet Jupiter, brighter than any star, is 30 ° to 35 ° high in the S during the twilight of the afternoon in Britain and weighs west to submerge under our horizon W about a few hours before dawn.

Stable binoculars reveal their four main moons, while the telescopes show their unit, 42 seconds wide arc and traversed by parallel bands parallel to the clouds at their equator. Vaults, stripes and dots, including the great red spot, are also observed, are all in the disk that the planet spins in less than 10 hours.

Jupiter is currently following West Virginia 11 ° NW (top right) of the Spica star. This movement returns June 10 after a stationary point 3 SE of the famous double star Porrima whose two equal stars 3.5 mag Currently at least 3 degrees collapse 169 years.

A simpler double-double-eye star is almost directly over the head when Jupiter crosses the meridian and identifies at our table that goes north of the Virgin at the zenith and beyond, as night begins today. Mizar shines with magnitude 2.2 in the plow’s handle, perhaps better known as the Big Dipper by United States starwatchers, and a companion 4.0 4.0, Alcor, which has 12 minutes of arc (approximately one-third of the width of the moon). Together they are known as the horse and rider, but if they are bound by gravity they are an open question.

A curved line along the plow’s handle extends Arcturus red giant in Bootes, the brightest star in the fourth night sky and the second brightest ever since Great Britain (after Sirius) and the brightest hemisphere of the N hemisphere There is a mnemonic rule that is “Arcturus arc, spike to Spica” as our curved line can be stretched further to reach Spica. I suggest this year we could rephrase this to read “Arcturus arc, jump to Jupiter,” although the planet is not confusing.

The area of Jupiter’s sky N was called the kingdom of galaxies. Halfway between Vindemiatrix stars in Virgo and Dénotbola in Leo, and at a distance of 54m light years, it is in the center of the Virgo galaxy cluster. Its most brilliant galaxies were identified in the 18th century and made their way into the iconic Messier catalog of blurred celestial objects. It is now suspected to contain more than 1,300 galaxies, all telescoping objects.

On an even larger scale, the Virgo cluster is only one part of the supergroup Virgo galaxies that spills over the entire surface of the table and even includes the Local Group of galaxies to which our Milky Way belongs. Another super-cluster, centered on the constellation Coma Berenices (COMA on our map) is 15 ° N and more nearly twice as far away.

The only of the 88 constellations to be the name of a real person, Queen Berenice II of Egypt, Coma contains no bright stars, but is distinguished by an inverted V dark stars – in fact, a group of goods’ star named Melotte 111 At a distance of 280 light years. It is said that they represent the braids of the Queen, which she has sacrificed as a votive offering.

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