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The 50,000-year green comet will fly by the earth next week: the closest distance is 27 million miles – yqqlm



News from IT House on January 24, the strange green comet C/2022 E3 (ZTF), which has not fly past the earth since the Paleolithic age, is about to fly past the earth again after a lapse of 50,000 years. The closest distance is only 27 million miles.

image source: Chris Schur

Astronomers discovered Comet C/2022 E3 (ZTF) last March through the Zwicky Transient Facility at the Palomar Observatory in California, USA. Calculations show that it orbits the sun every 50,000 years, which means that its last grazing The earth was in the stone age.

IT Home learned that the comet comes from the Oort cloud at the edge of the solar system and will be closest to the earth next Wednesday and Thursday, when it will pass the earth at a distance of 2.5 light minutes (light minutes), which is 27 million mile.

The following information comes fromThe internet:

When will Comet C/2022 E3 (ZTF) be visible?

Comet ZTF is now observable. Its magnitude is about 6th magnitude, which is the limit of naked eye visibility. In clear, dark skies, you may notice faint spots of light. Optics will help a lot: the telescope will even let you see the comet’s tail. On January 12, the comet passed perihelion and is now gradually brightening as it moves out of the solar system. **On February 1, 2023,** Comet ZTF will pass Earth at a distance of 0.28 AU and reach maximum brightness (approximately mag 5).

Where is Comet C/2022 E3 (ZTF) observed?

Currently, Comet ZTF is only visible from the northern hemisphere. There, it is always above the horizon (circumpolar comet). Comet C/2022 E3 (ZTF) moves across the sky and “visits” different constellations, read on to find out when and where it will meet bright stars and planets. At northern latitudes, it climbs to its highest point in the sky before dawn. Observers in the southern hemisphere will only be able to see the comet in early February 2023.

How to find Comet C/2022 E3 (ZTF) in the sky?

Comet ZTF is difficult to see with the naked eye and hard to find yourself, especially in light-polluted urban skies. It’s best to prepare ahead of time and take advantage of useful tools.

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