List Of Kreutz Sungrazers
The Kreutz sungrazers are a group of comets descended from the breakup of a comet in about 326 AD. They are typically traveling less than 2 Solar radius, solar radii from the Sun. Because they travel so close, they often burn up. Many bright comets are members of the group, including Comet Ikeya–Seki, which broke in 3 pieces in its 1965 perihelion. The Kreutz sungrazers can be subdivided into several groups- a primary group at Orbital inclination, inclination ~144° and Longitude of ascending node, node ~5, and a secondary, smaller group at inclination ~139° node ~350°. The entire group spans several Degree (angle), degrees across in their orbits, and make up a significant portion of the known comets in the Solar System—as of November 2015 about 3000 of the 4000 known comets belong to the Kreutz sungrazers group. {, class="wikitable sortable" , - ! align="left" , Astronomical naming conventions#Comets, Comet designation ! align="left" , Comet name ! align="left" , Orb ...
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Comet
A comet is an icy, small Solar System body that, when passing close to the Sun, warms and begins to release gases, a process that is called outgassing. This produces a visible atmosphere or coma, and sometimes also a tail. These phenomena are due to the effects of solar radiation and the solar wind acting upon the nucleus of the comet. Comet nuclei range from a few hundred meters to tens of kilometers across and are composed of loose collections of ice, dust, and small rocky particles. The coma may be up to 15 times Earth's diameter, while the tail may stretch beyond one astronomical unit. If sufficiently bright, a comet may be seen from Earth without the aid of a telescope and may subtend an arc of 30° (60 Moons) across the sky. Comets have been observed and recorded since ancient times by many cultures and religions. Comets usually have highly eccentric elliptical orbits, and they have a wide range of orbital periods, ranging from several years to potentially several mill ...
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