China News Service, Nanjing, May 1 (Reporter Yang Yanci) According to the news from the Purple Mountain Observatory of the Chinese Academy of Sciences on the 1st, on the first day of May, Tianyu ushered in a heavy celestial phenomenon-Venus and Jupiter in the dawn sky. At the "closest moment", the two planets are almost next to each other.
Because Venus and Jupiter's "escort tour" appeared in the early morning of "May Day", it is especially suitable for people staying at home due to the epidemic to experience the "star tour".
According to astronomers, the extremely close encounter between Venus and Jupiter occurred at 3:00 a.m. on the 1st, with an angular distance of only 14′.
At about 4:00 in the morning, the two "hand in hand" rose to the horizon, entering the most suitable time for viewing.
At that time, the brightness of Venus will be -4 magnitude, Jupiter -2 magnitude, and the two brightest stars in the sky will be almost next to each other visually.
Interested people may wish to get up early in their spare time to enjoy and take pictures calmly.
For astronomy enthusiasts, this rare spectacle can be viewed with a telescope.
In a telescope, the round faces of Venus and Jupiter can be seen at the same time.
The apparent diameter of Venus is 17", and the phase is similar to that of the waning gibbous moon. The apparent diameter of Jupiter is 35", which is twice the size of Venus.
The three Galilean moons flank Jupiter, Europa in the east, Io and Callisto in the west, and Ganymede just in front of Jupiter and barely visible.
Generally speaking, Venus and Jupiter are in close conjunction, on average once every 1-2 years.
But sometimes the two are too close to the sun to observe, and sometimes the "recent moment" did not land in China.
It is rare to find something that is close enough and suitable for observation in China.
In addition, according to astronomical calculations, before 2100, there will be 11 closer Venus-Jupiter conjunctions than this one, and the most noteworthy is the transit of Venus to Jupiter on November 22, 2065.
Venus passed in front of Jupiter, merged into one, and became the "one" star.