Serpens-Ophiuchus group occupies a very large celestial field in the West Side of the Milky Way. The Serpent is being grasped in the hands of Ophiuchus, the constellation wraps around Ophiuchus and is divided into two parts; Serpens Caput (head) and Serpens Cauda (tail).
The constellation of Ophiuchus represents Asclepius who was a skilled surgeon. He carries serpent because it had been regarded as a symbol of health in the ancient Greece.
Ophiuchus is the only constellation that the sun enters but which is not a part of the zodiac, because the southern area of Ophiuchus was that of Scorpius formerly.
The Serpens Cauda is bathed in the Milky Way, so it includes many nebulae and star clusters, and some novae have appeared around this field. In 1604, a supernova with a magnitude of about -2.5 appeared just southwest of theta Ophiuchi, marks right leg of Ophiuchus. The supernova is known as "The Kepler's supernova", and we have only three records of supernova appeared in the Galaxy including this one.
The constellation of Ophiuchus represents Asclepius who was a skilled surgeon. He carries serpent because it had been regarded as a symbol of health in the ancient Greece.
Ophiuchus is the only constellation that the sun enters but which is not a part of the zodiac, because the southern area of Ophiuchus was that of Scorpius formerly.
The Serpens Cauda is bathed in the Milky Way, so it includes many nebulae and star clusters, and some novae have appeared around this field. In 1604, a supernova with a magnitude of about -2.5 appeared just southwest of theta Ophiuchi, marks right leg of Ophiuchus. The supernova is known as "The Kepler's supernova", and we have only three records of supernova appeared in the Galaxy including this one.
Capricorn: Jan. 20 - Feb. 16
Aquarius: Feb. 16 - March 11
Pisces: March 11- April 18
Aries: April 18- May 13
Taurus: May 13- June 21
Gemini: June 21- July 20
Cancer: July 20- Aug. 10
Leo: Aug. 10- Sept. 16
Virgo: Sept. 16- Oct. 30
Libra: Oct. 30- Nov. 23
Scorpio: Nov. 23- Nov. 29
Ophiuchus: Nov. 29- Dec. 17
Sagittarius: Dec. 17- Jan. 20
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