What astronomical phenomena can be observed in May in Guyuan, Ningxia? Please specify the date and time.

Sun: It will be long in summer at 4 o'clock on May 6th, and it will be full on May 20th 17 o'clock.

Moon: The perigee is on May 5 19 and the apogee is on May 27 18. New Moon: May 3rd 14: 5 1: First quarter: May114: 33; Wang: May1719: 09; Final section: May 25th at 2: 52.

20 1 1 May, Saturn is the only planet with good observation conditions, and others are not ideal.

Mercury: the morning star. On May 8, Mercury was far away from the west, with a maximum angular distance of about 27 from the sun and a brightness of about 0.4. However, the horizon is very low and the observation conditions are not ideal. On May 20th, 19, Mercury merged with Mars, and Mercury was located 2 degrees south of Mars.

Venus: Morning Star. Before sunrise, it was located at a low altitude in the southeast and turned to a low altitude in the northeast at an early stage. The height of the horizon is getting lower and lower, only about 1 1 degree, which is difficult to observe.

Mars: From Pisces to Aries, it rises around 4 a.m. and the brightness is about 1.3. At sunrise, the horizon height of Mars is less than 14, and the observation conditions are still not ideal.

Jupiter: Go straight to Pisces and rise in the east around 3: 30 in the morning. At sunrise, the horizon height gradually increases from 7 at the beginning of the month to 22, and the brightness is about -2. 1.

Saturn: retrograde in Virgo, located in the southeast at sunset, with a brightness of about 0.6. And the observation conditions are good.

May 1 Four-star Moon Companion: In the eastern low altitude before sunrise in May 1, the four planets of water, gold, fire and wood approached each other with the waning moon on the 29th, forming a rare four-star moon companion. Venus is the brightest (-3.9, etc.). ), followed by Jupiter (-2. 1 etc.). ), while Mercury and Mars are darker, 0.4 and 1.3 respectively. Venus has the highest horizon, about 1 1, Mercury about 10, and Jupiter and Mars are less than 8. Therefore, it is relatively difficult to observe Mercury and Mars.

On May 6th, the η meteor shower in Aquarius was extremely huge: it originated from the famous Halley's Comet. The active period of the meteor shower was from June 19 to May 28th, and the maximum value may appear on May 6th at 2 1. Theoretically, the zenith radiation flux is about 70 per hour. But the observation conditions are not ideal, because its radiation point will not rise until two hours before sunrise.

May 8 Mercury's westward distance: This is the second westward distance of Mercury this year, but the height of Mercury's horizon at sunrise is only 10, and the observation conditions are poor.