C/2013 A1 (Siding Spring)

January 28, 2014. Below we provide Comet C/2013 A1 (Siding Spring) finder charts showing where the object is right now in the sky with respect to the brightest stars. Just weeks before the historic encounter of comet C/2013 A1 (Siding Spring) with Mars in October 2014, NASA's Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft entered orbit around the Red Planet. On Oct. 19, 2014, The nucleus of comet C/2013 A1 Siding Spring missed Mars by about one-third of the distance between Earth and Earth's moon or one-tenth the distance at which any identified comet has flown past Earth. Discovered Jan. 3, 2013 at Siding Spring Observatory, Australia. Comet Siding Spring passing Mars on 19 October 2013 as seen from Pretoria, South Africa. It has reached perihelion on 25 October 2014, and is not expected to return to the inner solar system for another million years.

C/2013 A1 este o cometă din norul lui Oort descoperită la 3 ianuarie 2013 de Robert H. McNaught la Observatorul Siding Spring, cu ajutorul unui telescop Schmidt-Casgrain de 0,50 m. Imagini ale predescoperirii, luate de Catalina Sky Survey datând din 8 decembrie 2012 au fost rapid găsite. Although early estimates of its orbit showed a good possibility of impact, latest observations suggest a near miss and raise great concern for Mars. Overview.

De atunci, au fost găsite observații din 4 octombrie 2012. Discovery. English: Comet C/2013 A1 (Siding Spring) is an Oort Cloud comet which made a close approach to Mars on 19 October 2014 at 18:28 UTC, passing the planet at a distance of approximately 139,300 kilometres (86,600 mi).

The first finder chart has a field of view of 50 degrees, while the second one has a … Close Comet Flyby Threw Mars' Magnetic Field Into Chaos. Comet C/2013 A1 (Siding Spring) Position and Finder Charts. C/2013 A1 (Siding Spring) is a long-period comet set for a very close encounter with Mars later this year. Composed of 100 30-second exposures taken at 36-second intervals between 20:00 …

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