Science Fiction Network, December 27 (Xu Mingyang) According to Xinhua News Agency , astronomy science experts said that on the evening of December 29, there will be a celestial phenomenon of Jupiter conjunct the moon in the sky. This is the last planetary conjunction of the moon in 2022. By then, as long as the weather is fine, people can enjoy the beautiful picture of the bright Jupiter and the first quarter moon competing in the southern sky at close range.
Jupiter, also called the age star, is one of the eight planets in the solar system. Its mass is 1.8982✕1027kg, which is about one thousandth of the mass of the sun. It is the most massive planet in the solar system and is known as the "Planet Giant". As of September 2022, 80 Jupiter satellites have been discovered. Among them, Europa, Europa, Ganymede, and Callisto were discovered by Galileo using a telescope, so they are also called Galilean satellites.
The scene when a planet's right ascension is the same as the moon's right ascension is called a "planet conjunction with the moon". The role of right ascension and declination is to determine the position of celestial bodies in the celestial sphere . "Jupiter conjunct the moon" refers to the celestial phenomenon when Jupiter and the moon happen to move to the same right ascension and are very close to each other. Because Jupiter is relatively large, the viewing effect of "Jupiter and the Moon" is usually very good.
There may be dozens of "planet-moon conjunction" astronomical phenomena in a year. Astronomers say that the moon's movement period on the celestial background is about one month, which is much faster than Jupiter. Therefore, the moon can catch up with Jupiter once, sometimes even twice, every month. Astronomers also said that for people on earth, Jupiter is observed for about half a year every year, and Jupiter and the moon can be encountered about 5 to 7 times, but not every time is suitable for viewing.
In addition to the planets conjunct the moon, there will be many wonderful celestial phenomena in the sky. If you are interested, you can pay attention to relevant astronomical information and go out to watch at the right time.
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