October Arid Meteor Shower Event and How to See It

October Arid Meteor Shower Event and How to See It

Illustration of the Arid meteor shower in early October 2021

Illustration of the Arid meteor shower in early October 2021

Netgenz - Sains | The Arid meteor shower that can be seen from the South-Southwest to the Southwest of the Earth in early October 2021. The event was said to have not occurred in the first few years. A researcher from the Center for Space Science Research (Pussainsa) of the Aeronautics and Space Research Organization (LAPAN) of the National Research and Development Agency (BRIN) Andi Pangerang explained that the meteor shower had started spitting out since last week. Some astronomers predict the peak of its activity could occur several days in the future.

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"This meteor shower looks dim through radar instruments for many of the southernmost regions in the southern hemisphere that can be occupied by humans, such as Argentina, Chile, and New Zealand," Andi said through recorded info, Friday (8/10). The Arid meteor shower can be seen 20 minutes after sunset, from South-Southwest to Southwest for 3.5 hours to 21:30 local time.

And those in the northern hemisphere can still see this meteor shower, even though the best assessment location for this meteor shower is in the southern hemisphere. He explained that meteor showers usually occur every year when a comet or asteroid dust crosses the Earth's orbit around the Sun. However, in the case of the Arid meteor shower, when the dust from comet 15P/Finlay as the parent object of the meteor shower was found, it never crossed Earth's orbit.

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This is because of the small size of comet dust, added solar wind from the Sun which can change the status of comet dust so that it changes from its initial place. He explained that initially the meteor shower was named 'Finlay-id' after the name of its parent object. Giving this name must remember the Draconid meteor shower which was previously called the Giancobinid, after the name of its discoverer. Current assessment verification shows that the meteor shower was of the Ara form, which is called the shape in the southern sky between the Centaurus form or the horseman form and Lupus and the wolf.

The name Ara is taken from Latin which means altar or censer. This is because the star figure is like an altar. Therefore, this meteor shower was given the name Arid after the location of the meteor shower. Andi explained that Ara's name had been added to the IAU (International Astronomical Union) Meteor Shower Working List based on an assessment report dated October 1, 2021, by the Central Agency for Astronomical Telegrams at the Harvard Campus.

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This meteor shower was previously identified through the Camera for Allsky Meteor Surveillance (CAMS) meteor monitoring camera in New Zealand, on September 28 and 29, respectively. Besides that, the Southern Argentina Agile Meteor Radar Orbital System (SAAMERS-OS) meteor radar on Tanah Api Island, Tierra del Fuego, Southern Argentina knows this meteor shower for a minimum of three hours on September 29, 2021.

Long ago, in 1995, the first comet 15P/Finlay dust erupted along the 1995 perihelion. The second burst occurred in 2008 and another 6 years later in 2014. Based on three assessments of the initial comet dust eruption, the peak of the Arid meteor shower was predicted at October 7, 2021, at 10.55 WIB / 11.55 WITA / 12.55 WIT.

Furthermore, Andi explained that the main size of comet 15P/Finlay is 1.8 km. This comet dust only has the size of a grain of sand, so this meteor shower moves quite slowly at a speed of 38,880 km / h, so it is quite difficult to see. "Even though it is slow, there is an opportunity for data on this meteor shower to be collected sufficiently from various parts of the Earth," said Andi.

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