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O Comet C/2023 A3 is one of the most anticipated phenomena by astronomers, as it is expected to be the brightest comet in recent times to be visible to the naked eye. According to the website Star walk, it can be seen in Brazil between September and October, a period in which it will be further away from the Floorsaws, at an angular distance of 23°, which will allow for better viewing. The peak of the phenomenon will occur on October 12th, and it will be visible in part of the states of Amazon, Roraima, from Amapá and Para, located in the North hemisphere. Check out the details. r70
Getting to know the comet C/2023 A3 1g1638
or comet C/2023 A3 was first observed in January 2023 by Tsuchinsha Chinese Observatory and, in the following month, by Asteroid Terrestrial-impact Last Alert System (ATLAS). Therefore, it was also called Tsuchinshan-ATLAS. According to observations, the comet's orbit is retrograde, that is, it moves in the opposite direction to most other objects in the solar system.
In addition to drawing attention due to its brightness, the C/2023 A3 It also stands out for its tail, a kind of trail it leaves in space.
“As the ice particles evaporate, they will quickly escape into space, taking with them a large amount of dust that will extend into a long, bright tail. As history shows, comets that close to the Sun have the most impressive tails, formed shortly after being “baked” by the Sun’s heat. And this is the case for comet C/2023 A3.”
Star walk
Comparisons with Halley's Comet 292q1j
As it is a newly discovered comet, there is still no information about its size. C/2023 A3; therefore, in this regard, it is not possible to compare it with the famous comet Halley. However, they have some information in common. For example, both can be seen with the naked eye, as they have an intense brightness observable from EARTH, and has a retrograde orbit.
In the last age near the EARTH, in April 1986, the Halley did not present a good magnitude, not exceeding 2 on the scale. Several factors contributed to the comet not appearing as expected, as it was seen in 1910. According to the records, the Halley was heading towards aphelion (being further away from the Sun, therefore less bright), and atmospheric and light pollution also influenced its visibility.
At this point, the C/2023 A3 it will be brighter, as the magnitude can reach up to -3 (we will talk about magnitude later).
A curiosity about the comet Halley is that it only “appears” every 76 years, when it reaches perihelion again (closest to the Sun). The comet’s next visit is predicted to be on July 28, 2061.
Where will you be able to see the C/2023 A3? 105a3d
It is expected that between September 27th and October 2nd, the comet C/2023 A3 be visible in the South hemisphere (in most of Brazil) with a brightness of magnitude -1. In North hemisphere, it could reach magnitude -3. According to the website Star walk, this could make the comet considered “one of the brightest visible in the Northern Hemisphere in the last 100 years”.
It is worth ing that, in Brazil, part of the states of Amazonas, Roraima, Amapá and Pará are located in North hemisphere. In other words, anyone in this region will see the phenomenon at the peak of the predicted magnitude (brightness).
To be seen with the naked eye, the magnitude of a comet should be around 3 on the magnitude scale, which measures the total light scattered by the object. The lower the magnitude, the greater the visibility of the comet to the naked eye.
According to the website's forecast Star walk, in September the magnitude of the C/2023 A3 will be 7 to 3. During this period, the comet will move away from the Floorsaws and can be seen with the naked eye or with binoculars in the early morning in South hemisphere, and it is even possible to observe the comet's tail. In North hemisphere, it can also be seen during this same period, but it will be very low on the horizon.
However, if you are in the North hemisphere, keep an eye on the sky on October 12th, as the comet will be brighter (with a magnitude of -3) and closer to the EARTH, which can be seen high in the sky at night.
In November, the comet will still be visible, but perhaps not with the naked eye, as its magnitude will be between 4 and 8. In December, the comet is expected to gradually begin to approach the Sun, with a magnitude between 8 and 10. During this period, it will be lower on the horizon and will not be visible in the Southern Hemisphere.
How to follow the event 71713o
You will be able to see the comet with the naked eye in the morning or evening, depending on your location. But on the website The Sky Live you can see in real time the information of the C/2023 A3.
To find the comet in the sky, you can use the app sky tonight, available to Google Play, App Store and AppGallery, store of Huawei. When installing the app, search for the comet by name “A10SVYR” and click on the target icon next to the search result. The app will then show you the current position of the comet in the sky relative to your location. Point your phone at the sky and follow the white arrow that will appear on the screen to locate the comet. C/2023 A3.
Have you ever witnessed a comet ing by?
Source: Star walk, REA Brazil e The Sky Live
Text revised by Rafael Braga in 31 / 08 / 2024.
This is really exciting. It’s incredible to think that we will have the opportunity to observe a comet brighter than Halley’s! It also reminds us of the importance of astronomical events for education and awakening interest in science. It would be interesting to see an analysis of how these phenomena can inspire future generations of scientists and astronomers. Congratulations on the informative content!”