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The Zodiac is a group of 12 constellations: Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpius, Sagittarius, Capricornus, Aquarius, Pisces. Some version of these constellations are found in traditions around the world, for this band around the celestial sphere includes the ecliptic, the apparent path of the sun through the
The Golden Gate of the Ecliptic is an asterism in the constellation Taurus that has been known for several thousand years. The asterism is formed of the two eye-catching open star clusters , the Pleiades and the Hyades that form the posts of a virtual gate on either side of the ecliptic line.
A celestial map by the Dutch cartographer Frederik de Wit, 1670. A star chart is a celestial map of the night sky with astronomical objects laid out on a grid system. They are used to identify and locate constellations, stars, nebulae, galaxies, and planets. [1]
Depending on the definition, equatorial constellations may include those that lie between declinations 45° north and 45° south, [10] or those that pass through the declination range of the ecliptic (or zodiac) ranging between 23.5° north and 23.5° south.
The official constellation boundaries, as set by Belgian astronomer Eugène Delporte in 1930, [b] are defined by a polygon of 30 segments. In the equatorial coordinate system, the right ascension coordinates of these borders lie between 00 h 27 m 03 s and 23 h 41 m 06 s, while the declination coordinates are between 77.69° and 46.68°. [3]
The following lists of constellations are available: IAU designated constellations – a list of the current, or "modern", constellations; Former constellations – a list of former constellations; Chinese constellations – traditional Chinese astronomy constellations; List of Nakshatras – sectors along the Moon's ecliptic
Beta Sagittarii, located at a position associated with the forelegs of the centaur, has the traditional name "Arkab", meaning "Achilles tendon". Nova Sagittarii 2015 No. 2 was discovered on 15 March 2015, [10] by John Seach of Chatsworth Island, NSW, Australia. It lies near the center of the constellation.
Orion is located on the celestial equator, but it will not always be so located due to the effects of precession of the Earth's axis. Orion lies well south of the ecliptic , and it only happens to lie on the celestial equator because the point on the ecliptic that corresponds to the June solstice is close to the border of Gemini and Taurus , to ...