C/2021 A1 (Leonard) is a long-period comet. It was discovered by GJ Leonard at Mount Leman Observatory on January 3, 2021. It was the first comet discovered in 2021. At that time, it was 5AU (approximately) from the sun. 750 million kilometers), and it will take more than a year to reach the perihelion.
Catalina Sky Survey
The current total brightness is only about 6-7 magnitudes, and it is expected to be the closest to the earth and the brightest on December 13, 2021. It is roughly estimated that the total brightness will reach 1.9 magnitudes or more by then. It may be the brightest comet in 2021, and it has a chance to dawn. It was previously seen with the naked eye. If you are interested in shooting, you can now see it with medium and large telescopes. Please refer to the figure below for the approximate path it actually travels.
Its maximum brightness has been revised to 4.3, although it is dimmed, it is still visible to the naked eye. Maybe not,Comets are unpredictable.
This is a line graph, not a real path.
It is recommended to use binoculars, short-focus telescopes for observation in places with low light pollution, and use the camera to take long exposure shots to get more details.