What is the constellation of 20 1 1.7. 12?

Cancer? (Date of birth: June 22nd-July 22nd)

Cancer (Latin: Cancer), one of the zodiac signs, covers an area of 505.87 square degrees, accounting for 1.226% of the whole day. There are 23 stars in Cancer that are brighter than 5.5, the brightest star is Nobukuro (Cancer β), and the apparent magnitude is 3.52.

Every year, on the evening of October 30th, 65438+/kloc-0, the cancer center passes through the upper meridian. Cancer is located between Gemini and Leo, with Tmall in the north and Canis Canis and Ophiuchus in the south. This is a dim little constellation, and there are no brighter stars than level 3. The three brighter stars of Cancer, α, β and δ, form a herringbone structure.

There are two messier objects in this constellation: M44 is located near Haunted House 4 (Cancer δ); M67 is located to the west of Yosuke Zengsan (Alpha Cancer). Both are open clusters.

Extended data:

Deep space objects—

1, M44 (ghost cluster, or honeycomb cluster), an open cluster located in the middle of Cancer, looks like a fuzzy white fog to the naked eye, which was called "corpse gas" in ancient China. The brightness is 3. 1, and the distance is 520 light years.

2.M67 is a huge and dark open cluster, which is located in the west of Yosuke Zengsan (α) and one of the oldest clusters in the Milky Way. It is over 10 billion years old and 2700 light years away. ?

3.NGC2775, also known as Coldwell 48, is a spiral galaxy located in Cancer. This galaxy has a nuclear sphere and multiple spiral arms, in which the ionized hydrogen region can be detected, which means that the star is recently formed. It was discovered by William Herschel in 1783.

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