Giant comet K2 just made its closest pass to Earth

A comet discovered 5 years ago will be closest to Earth on July 14. Larger than most of its congeners, C/2017 K2 (PanStarrs) is visible in telescopes. Its activity and luminosity should increase in the coming weeks as it approaches the Sun.

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The largest comet ever detected will soon cross the Solar System, its diameter reaches 100 kilometers!

when this kite was discovered in 2017 via the PanStarrs program in Hawaii, was about 1.5 billion miles from us, between Saturn et Uranusi.e. 16 Le site Du Big Bang au Vivant…” data-image=”” data-url=”” data-more=”Lire la suite”>astronomical units — 16 times the distance between the Earth and the Le Soleil est l’étoile la plus proche de la Terre, dont elle est distante d’environ 150 millions de kilomètres. Le Soleil est situé à 8,5 kparsecs du centre de la Voie lactée. Dans la classification des étoiles, le soleil est une étoile de type G2.
La masse…” data-image=”” data-url=”” data-more=”Lire la suite”>Sun
— and yet it was already shining. That she be active at such a great distance from theVoici une liste d’objets célestes pouvant être dénommé astre (non…” data-image=”” data-url=”” data-more=”Lire la suite”>star that heats it, the Sun, surprised the astronomers who later awarded him the palm of the farthest active comet ever observed, since then enchanted by the gigantic Bernadelli-Bernstein whose core is estimated to be more than 100 kilometers in diameter!

Five years have passed and now C/2017 K2 (PanStarrs), as it is called, is in the inner Solar System, and soon in the vicinity of Earth. “Neighborhood” if it is reported on the scale of its  because it will still be 270 million kilometers from our planet, this Thursday, July 14. It is still huge, much larger than Mars. The approach will also take place, the day after a Full Moon as always dazzling, therefore embarrassing to observe the faintest objects and diffuse As the kites. However, this could be full of surprises since with a core estimated to be about 18 kilometers in size (observations fromHubble), K2 is a very large piece of ice and dust that ridicules most of its congeners that we see passing by. This could well make all the difference in the coming days and weeks, as it approaches the Sun.

Where is comet C/2017 K2?

C/2017 K2 (PanStarrs) will reach the point of his orbit very elliptical closest to the Sun, the perihelion, on December 19, at 269 million km. Until then, many amateur astronomers and also happy curious people who own a refractor or telescope with a minimum aperture of 150 mm -or know someone who does- will enjoy observing this summer and will follow, night after night, the evolution of your hair (eat), as well as its already impressive and growing tails of gas and dust. the size of your Santé
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which forms as a ball of gas around its core, is currently estimated at 130,000 kilometers, and its tail would extend over 800,000 kilometers.

With a magnitude current greater than 10, C/2017 K2 (PanStarrs) is not visible ineye naked. In any case, not at the moment. The comet continues this week its passage through the Ensemble de petits satellites…” data-url=”” data-more=”Lire la suite”>constellation Serpentarius (Ophiucus), visible looking south over Scorpio in early evening. It is almost in opposition to the Sun and therefore visible most of the night on an instrument. Subsequently, as the plane of its orbit is almost perpendicular to that of the planets, the Le plan de l’écliptique, défini d’un point de vue héliocentrique (avec le Soleil fixe), est aussi le plan de l’orbite…” data-image=”” data-url=”” data-more=”Lire la suite”>ecliptic plane, K2 will cross it around July 25 and will pass, after this date, in the southern celestial hemisphere from where it will be visible for the next few months. Their brightness it could increase significantly and become a star visible without an instrument. We are not immune to surprises.

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