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Time: 2021-08-22 14:33
- Newspaper selection: Chuosha
- Contribution editor: Zhang Xuhua
The Taipei Municipal Planetarium stated that after Jupiter’s arrival on the 20th, there will be a 5-year eclipse starting at 10pm today (22nd), which is a phenomenon in which Jupiter’s moons cover each other. , The public can enjoy it through telescopes over 8 cm.
According to the Taipei City Hall of Astronomy and Science Education, Jupiter is not only the largest planet in the solar system, but also an astonishing number of moons orbiting it. There are as many as 79 satellites that have been identified so far, and the largest 4 of them are also known as “Galileo satellites.” They are Io (Io), Europa (Europa), Europa (Ganimed) and Callisto (Callisto).
The planetarium explained that when these large satellites orbit Jupiter, they will also “cover” and “eclipse” each other, that is, Jupiter’s moons will cover each other, decrease in brightness, and disappear or disappear into each other’s shadows. Part of the phenomenon is missing.
The planetarium pointed out that the most interesting thing to watch this time is Europa eclipse first and then cover Europa. The eclipse starts at 10:2:10 this evening, reaches the eclipse at 10:32:59, and the eclipse starts at 10:35:57. .
The planetarium stated that if the public wants to see the two moons eclipse and eclipse each other, in addition to watching the live broadcast through the YouTube “Taipei Planetarium” channel, they can also use telescopes over 8 cm to watch, but if they only use binoculars to watch, the resolution is insufficient. , At most, you can only feel the difference in brightness changes of Jupiter’s satellites.
According to the planetarium, the mutual eclipse and eclipse will only occur when the Earth’s line of sight crosses the equatorial plane of the Jupiter satellite. Therefore, this time the stargazing index has reached an exciting level of 3 stars. If you miss this observation opportunity, you will have to wait until the next time. May 2026.
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