Ini dia gerhana bulan total terlama


Surabaya (Antaranews Megapolitan) – Theoretical physicist at the Surabaya Sepuluh Nopember Institute of Technology (ITS), Dr. rer nat Bintoro Anang Subagyo said that the total lunar eclipse that occurred in Indonesia on Saturday (28/7) was the longest totality phase in the last century.

Met in Surabaya, Friday, the man who is familiarly called Bintoro said that the totality phase of this lunar eclipse will last 103 minutes.

It is estimated that the penumbra phase will begin to appear at 00.14 in the morning. The partial eclipse will appear from 01.24, while the total eclipse will begin to appear at 02.30 and will end after the time of dawn prayers.

“This eclipse will actually end at 06.28, but it cannot be observed because the position of the moon has already set,” he added.

Based on the cycle, the lunar eclipse with the longest totality phase will again occur on June 9, 2123 with a duration of 106 minutes. This is similar to the Super Blue Blood Moon in January, which will repeat itself 100 years later.

“This is the second time that a rare lunar eclipse phenomenon has been observed in Indonesia,” he said.

He explained that the long duration of time was due to the moon’s trajectory at that time, which was almost close to the center line of the earth’s umbra, so that the moon would be in that shadow for a relatively longer time.

The aphelion phenomenon, where the earth is at its farthest point from the sun which occurred this July, is also thought to be the cause.

“At the peak of the eclipse, the Earth-sun distance is about 184,000 km closer than at aphelion, or 151.8 million km,” said Bintoro.

Like the lunar eclipse in general, the eclipse in the early hours of the morning can be witnessed with the naked eye. “No need to use glasses like during a solar eclipse,” he said.

Thus, he hopes that people in Indonesia, especially in Surabaya, will not miss this rare natural phenomenon.

According to him, even though Surabaya is not included in the list of 20 monitoring points announced by the Meteorology, Climatology and Geophysics Agency (BMKG), the weather in Surabaya is currently quite favorable for making observations on its own.

Supported by the available equipment, the Theoretical Physics and Natural Philosophy Laboratory of the ITS Physics Department will also make observations on the 4th floor of building F of the ITS Physics Department.

He considered that the equipment owned by his laboratory was sufficiently qualified to produce the best documentation. “I hope that with the observations that will be made, ITS can have videos or pictures of this once-in-a-century phenomenon,” said Bintoro.





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