Stargazing enthusiasts are in for a celestial treat this October as Comet Tsuchinshan–ATLAS makes its grand appearance in the evening sky. This comet is being hailed as the most spectacular cometary visitor for northern latitudes since the iconic Comet Hale-Bopp graced the skies back in 1997.
Discovered by astronomers at the Purple Mountain (Tsuchinshan) Observatory in China, this comet first caught the attention of sky-watchers in early 2023. Initially spotted as a faint object far from the Sun, it later made its presence known in images captured by the Asteroid Terrestrial-impact Last Alert System (ATLAS) telescope in South Africa, hence the composite name.
The orbit of Comet Tsuchinshan–ATLAS reveals that it last approached the Sun and was visible from Earth over 80,000 years ago, around the time when humans began their migration out of Africa. After venturing into the outer reaches of the solar system, the comet is now making its return journey towards the Sun.
Despite initial concerns that the comet’s nucleus might disintegrate before reaching the Sun, it has stayed intact as it recently completed its orbit on September 27. While observers in the southern hemisphere have already been treated to stunning views of the comet, sky-watchers in the northern hemisphere can look forward to spotting Comet Tsuchinshan–ATLAS as it whizzes past Earth on October 12.
To locate the comet in the evening sky, gazers are advised to look towards the south-west, where it will be visible rising higher each night between Venus and the bright star Arcturus. While predictions suggest the comet may appear fainter than Arcturus, the shedding of large amounts of dust is expected to enhance its brightness, potentially making it one of the most brilliant objects in the night sky.
Even if the comet does not meet these optimistic expectations, it promises to be a spectacular sight worth witnessing. Prepare for this cosmic event by finding a location with a clear western horizon, away from artificial lights, and consider using binoculars or a telescope for a closer look. Don’t miss the chance to witness Comet Tsuchinshan–ATLAS as it graces our skies this October.
In addition to the comet, October skies offer plenty of other celestial delights for stargazers. Venus can be spotted low in the south-west after sunset, forming a dazzling pair with the crescent Moon on October 5. Saturn shines brightly in the southern sky, with the Moon passing beneath it on October 14. Jupiter stands out in the north-east, along with the Pleiades star cluster, while Mars glows with a distinctive orange-red hue in Gemini.
The Full Moon on October 17, known as the Hunter’s Moon, will be a stunning supermoon, the biggest and brightest of the year. However, the annual Orionid meteor shower on October 21 may be somewhat subdued due to the bright moonlight, washing out the view of its shooting stars.
Don’t miss these upcoming celestial events and make sure to mark your calendars for the best stargazing opportunities this October.