The furthest figure is derived from either the 1997 or 2007 Hipparcos star catalogue parallax figure and it has been known to produce distances that are wrong. The furthest star that is located in the constellation is HIP 12972 and it is 326163.3 light years away from the Sun. The nearest star to the Earth with an exoplanet is HD 7924 which is about 54.83 Light Years. The nearest star to Earth is Achird which is roughly about 19.42 Light Years from the Earth. The stars mentioned are from the Hipparcos catalogue or have been added because of their special status. If you know of a star that is nearer or further then do let me know in the comments and I'll add it to the site. The caveat of these stars are that they are catalogued on this site. The image below was generated using Night Vision, a free to use and download application by Brian Simspon. The average distance to the main stars is 268.66 light years. The nearest main star in the constellation is at a distance of 54.74 light years and the furthest main star is a distance of 549.10 light years. You can't just go to one location and arrive at the constellation because the constellation is made up of stars at different locations and different distances. There are 15 non-Messier deep space objects that are covered on this site and the list is below. There are 2 deep space objects that were identified by Charles Messier in this constellation.The current largest star so far identified in the constellation of Cassiopeia is PZ Cassiopeiae.There is a dedicated page for exoplanets in Cassiopeia. There are 20 Extrasolar Planets (Exoplanets) in this constellation that are detailed on this site.The Zodiac constellations are based on the Ecliptic. The Earth is titled at 23.44° which is why the two differ. The Ecliptic is the path that the Earth takes round the Sun. The Celestial Equator is the projection of the terrestrial equator into space. Cassiopeia lies north of the Ecliptic which is different to the Celestial Equator.Cassiopeia is a northern celestial hemispheric constellation.Cassiopeia is not a member of the Zodiac group of twelve constellations that appear when the Sun sets.There are 188 stars that can be seen with the naked eye in the constellation on a very clear night sky. The hipparcos satellite scanned and detailed 2324 stars. Cassiopeia has 5 stars that make up the constellation.The constellation is one of the original constellations that was devised by the Ancient Greco-Egyptian astronomer Ptolemy who lived between 90 A.D.
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