Kepler's Supernova in Wikipedia || Wiki Video
Channel: Wikinvideos
Date: 2019-10-08

This is the information available for Kepler's Supernova in Wikipedia as of October, 7th, 2019.

SN 1604, also known as Kepler's Supernova, Kepler's Nova or Kepler's Star, was a supernova of Type Ia that occurred in the Milky Way, in the constellation Ophiuchus. Appearing in 1604, it is the most recent supernova in our own galaxy to have been unquestionably observed by the naked eye, occurring no farther than 6 kiloparsecs or about 20,000 light-years from Earth.

Observation.

Visible to the naked eye, Kepler's Star was brighter at its peak than any other star in the night sky, with an apparent magnitude of −2.5. It was visible during the day for over three weeks. Records of its sighting exist in European, Chinese, Korean and Arabic sources.

Johannes Kepler's original drawing from De Stella Nova (1606) depicting the location of the stella nova, marked with an N (8 grid squares down, 4 over from the left)
It was the second supernova to be observed in a generation (after SN 1572 seen by Tycho Brahe in Cassiopeia). No further supernovae have since been observed with certainty in the Milky Way, though many others outside our galaxy have been seen since S Andromedae in 1885. SN 1987A in the Large Magellanic Cloud was easily visible to the naked eye.

Evidence exists for two Milky Way supernovae whose signals would have reached Earth c. 1680 and 1870 – Cassiopeia A, and G1.9+0.3 respectively. There is no historical record of either having been detected in those years probably as absorption by interstellar dust made them fainter.

The remnant of Kepler's supernova is considered to be one of the prototypical objects of its kind and is still an object of much study in astronomy.

Controversies.

Astronomers of the time (including Kepler) were concerned with observing the conjunction of Mars and Jupiter, which they saw in terms of an auspicious conjunction, linked in their minds to the Star of Bethlehem. However, cloudy weather prevented Kepler from making any celestial observations. Nevertheless, his fellow astronomers Wilhelm Fabry, Michael Maestlin and Helisaeus Roeslin were able to make observations on 9 October, but did not record the supernova. The first recorded observation in Europe was by Lodovico delle Colombe in northern Italy on 9 October 1604. Kepler was only able to begin his observations on 17 October while working at the imperial court in Prague for Emperor Rudolf II. The supernova was subsequently named after him, even though he was not its first observer, as his observations tracked the object for an entire year. These observations were described in his book De Stella nova in pede Serpentarii ("On the new star in Ophiuchus's foot", Prague 1606).

To view the full article in Wikipedia: https://en.wikipedia.org/wiki/Kepler's_Supernova

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By Eduard Ender (1822-1883) - http://cache.eb.com/eb/image?id=83677&rendTypeId=4 Now redirects to http://media.web.britannica.com/eb-media/77/83677-004-72A98E5A.jpg, Public Domain, https://commons.wikimedia.org/w/index.php?curid=822362

By ESO/Y. Beletsky - https://web.archive.org/web/20081121184421/http://www.eso.org/gallery/v/ESOPIA/Paranal/phot-33a-07.tif.html, CC BY 4.0, https://commons.wikimedia.org/w/index.php?curid=7398904
By Hans von Aachen - Web Gallery of Art:   Image  Info about artwork, Public Domain, https://commons.wikimedia.org/w/index.php?curid=14699580

By Mccapra - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=60636015

By NASA/ESA, CC BY 3.0, https://commons.wikimedia.org/w/index.php?curid=407520

By https://wellcomeimages.org/indexplus/obf_images/28/d1/fa7a5d14776e5b6625778baed789.jpgGallery: https://wellcomeimages.org/indexplus/image/L0026589.html

Wellcome Collection gallery (2018-03-29): https://wellcomecollection.org/works/avwb9dqd CC-BY-4.0, CC BY 4.0, https://commons.wikimedia.org/w/index.php?curid=36012695