There are many observation constellations at low latitude _ There are many observation constellations at low latitude.

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There are many constellations in west longitude 160 and south latitude 20.

The higher the latitude, the fewer constellations you see. When the north pole is the benchmark, you can only see the constellations on the northern celestial sphere, but you can't see the constellations on the southern celestial sphere; When you stand at the South Pole, you can only see the constellations in the southern hemisphere, but not the constellations in the northern hemisphere. Only by standing on the equator can you see 88 constellations all day. As the saying goes: sit on the floor, travel 80 thousand miles a day, and look at thousands of rivers.

Beijing is located at 40 degrees north latitude. Compared with 20 degrees south latitude, Beijing has higher latitude and fewer constellations.

As for the month, it mainly affects the number of constellations we can see after nightfall. Because the stars also rise and set due to the earth's rotation, but the period is sidereal day, that is, 23: 56: 4. In this way, every day, the stars rise 3 minutes and 56 seconds earlier than the previous day. Over time, the rising time of a star may be in the daytime, and even the setting time in the daytime is very short, that is, it is invisible to the naked eye.

But generally speaking, there are many constellations at low latitudes.