What is the invisible constellation of the twelve constellations?

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Ophiuchus (astronomy) editor

Ophiuchus is one of the zodiac signs. Seen from the earth, Ophiuchus is located to the south of Ursa major, to the north of Scorpio and Sagittarius, and to the west of the Milky Way. Ophiuchus is the only constellation connected with another constellation-Ophiuchus. At the same time, Ophiuchus is the only constellation that spans the celestial equator, the Milky Way and the ecliptic. Ophiuchus is big and wide, rectangular, and the equator of the celestial sphere passes through this rectangle diagonally. Although Ophiuchus spans a short galaxy, the center of the Milky Way is Sagittarius, not far from Ophiuchus. The Milky Way has a prominent part here, forming the widest area of the Milky Way. Latitude variation lies in+80 and? You can see it between 80.

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Ophiuchus constellation

Latin name

Ophiuchus constellation

Latin abbreviation

Oph

indicate

Snake catcher, healer

right ascension

17 hours

slanting

Surface product

948

Regional ranking

Bit 1 1

The number of bright stars

five

Brightest star

After (Ophiuchus Alpha)

meteor shower

Ophiuchus meteor shower

Adjacent constellation

Five Immortals, Hydra, Libra, Scorpio, Sagittarius, Hydra, Eagle.

Optimal observation time

July

Optimum observation latitude

+80 What else? Between 80 degrees

Apparent magnitude of the brightest star

1 starry sky position editing

Declination: 0, right ascension:17 h. Every year around165438+1October 29th, the sun will pass Ophiuchus.

Ophiuchus constellation

It was not until February of 65438+ 17 that it entered Sagittarius, so Ophiuchus was recognized as one of the thirteen constellations on the ecliptic in astronomy at the International Astronomical Congress of the International Astronomical Union (IAU) in 1928. Even so, Ophiuchus does not belong to one of the twelve constellations in astrology. The difference between Ophiuchus and astronomy and astrology has always been an old topic of debate among astrologers. In addition, Scorpio has no solar terms on the ecliptic, but Ophiuchus has solar terms and heavy snow.

Ophiuchus α is the brightest star in Ophiuchus, a white giant (A5Ⅲ) with an apparent magnitude of 2.08, an absolute magnitude of 0.96 and a distance of 54 light years. Ophiuchus β is a red giant (K2Ⅲ), with an apparent magnitude of 2.77, a distance of 99 light years and an absolute magnitude of -0. 1. There is a large open cluster with few stars in its northeast 1 5.