67P/Churyumov-Gerasimenko Totally Explained

Everything about 67p Churyumov-gerasimenko totally explained

67P/Churyumov-Gerasimenko is the designation of a comet with a current orbital period of 6.6 years. It is the destination of the European Space Agency's Rosetta spacecraft mission, launched on March 2, 2004.

Comet physical parameters

Diameter: 4 km

Hubble pictures

As preparation for the Rosetta mission Hubble Space Telescope pictures taken on March 12, 2003, were closely analyzed. An overall 3-D model was constructed and computer generated images from various view angles are shown in this composite picture.

Discovery

This comet was discovered by Klim Ivanovich Churyumov who examined a photograph exposed for periodic comet 32P/Comas Solá by Svetty Gerasimenko on September 11, 1969 at the Alma-Ata Astrophysical Institute. He found a cometary object near the edge of the plate, but assumed that this was Comas Solá. After returning to his home institute in Kiev, all photographic plates were investigated closely. About a month after the photograph was taken (October 22), it was discovered that the object couldn't be the assumed comet, because it was about 1.8 degrees off the expected position. Further scrutiny produced a faint picture of Comas Solá at its expected position on the plate, thus proving that the other object was a newly discovered comet.

Orbital history

Churyumov-Gerasimenko has a rather interesting orbital history. Comets are regularly nudged from one orbit to another when they encounter Jupiter or Saturn in close proximity. For this comet it was calculated, that before the year 1840 it was completely unobservable due to its perihelion distance of about 4.0 AU. At this time Jupiter shifted that distance to about 3.0 AU. Later on, in the year 1959, another encounter with Jupiter pushed it to about 1.28 AU, where it's now.

Further Information

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