Can the naked eye see the location of cancer on the earth? what do you think?

No constellation is invisible to the naked eye, and neither is Cancer.

However, Cancer is quite dim. The brightest star is only 3.8. What are the shapes of a bunch of dark stars? If the landlord can't leave the city, it's best to give up directly (12, 14, I went to the most remote place in Shanghai, with a limit magnitude of 4.5, etc. Theoretically, I can see several stars in Cancer, but it is too dark to observe there, not for the starry sky.

If the landlord can take the suburbs, it is actually very simple to observe Cancer. In the afternoon 12, find the brightest star Mars, and then find two stars that are almost bright to the right. Start from Mars and connect with those two stars, and then double it, and there will be Cancer. Then slowly find the stars and force him to be a crab.

Attached to the star map /i? ct=5033 16480。 z = 3 & amptn = baiduimagedetail & ampB6 % AC % BC % BE % D0 % C7 % BF % D5 & amp； in = 2460 & ampcl = 2 & ampcm= 1。 sc = 0 & amplm=- 1。 pn= 1。 rn= 1。 di= 1843297 180。 ln= 13