Astronomers are eagerly tracking Comet C/2023A3, which may shine as brightly as Polaris this fall. The comet originates from the Oort cloud and is observed across the globe, and if it survives its encounter with the Sun, its upcoming perihelion could mark a major celestial event.
Comet C/2023A3 (Jinqinshan-Atlas) was discovered by observatories in South Africa and China in early 2023. It comes from the distant Oort cloud. Over the past year, it has attracted intense interest from astronomers and astronomy enthusiasts, including the Unistellar community. Nearly 90 observers contributed to collecting data on its brightness evolution, thereby refining predictions of its behavior as it approaches the center of the solar system.
Models developed by Ariel Graykowski, a researcher at the SETI Institute and leader of Unistellar's comet activity program, suggest that the comet could become as bright as Polaris this fall, providing a spectacular view to the naked eye.
New observations this fall will shed light on some of the mysteries surrounding Comet A3 from September 27, when the comet reaches perihelion, until November 2, when the comet becomes visible. Previous observations have revealed some anomalies that have intrigued the scientific community. After an unexpected period of dimming, Comet A3 now appears to be regaining its brightness. Several hypotheses are being considered: the phenomenon could be related to the comet's phase angle (the angle between the Sun, the comet, and an observer on Earth), or it could be related to the comet's fragmentation.
According to Franck Marchis, co-founder of Unistellar and director of citizen science at the SETI Institute: "If Comet A3 survives its close proximity to the Sun and becomes one of the brightest objects visible in the Northern Hemisphere - just like Comet McNaught in 2007 - then Comet A3 will be one of the most important celestial events of the year, if not the decade. In theory, observations will provide answers as to whether it will reach magnitude -2. This comet is both spectacular and unpredictable, making it an event not to be missed!"
Unistellar community for space observations
On this occasion, Unistellar invites its community of more than 25,000 users to contribute to citizen science activities. Comet C/2023A3 is already available in the Unistellar application catalog, making it easy to track. To record observational data, participants can follow the instructions provided on the comet-specific tutorial page.
Unistellar's scientific partner, the SETI Institute, is organizing a competition through the Unistellar network, the winner of which will successfully observe the comet as it moves away from the sun after September 27. If the comet disintegrates, observations of Comet A3 after it passes the sun will be most valuable. "These observations will be made early in the morning and will be difficult, but worth the sleepless nights," said Franck-Machis.
About Unistellar
With UNISTELLAR, everyone can enjoy discovering and understanding the universe. The company has reinvented telescopes with eVscope, which combines optical and digital innovations with high-precision optical structures, high-sensitivity digital sensors, and onboard intelligence for real-time image processing.
As the market leader in smart telescopes, UNISTELLAR has won awards at both CES 2018 and 2022. In 2021, the company began a strategic partnership with Nikon, which invested in the company in 2023. In the summer of 2024, the French company diversified with the launch of its first enhanced binoculars on Kickstarter.
Unistellar has partnered with NASA and the SETI Institute to create a unique citizen science program. In March 2023, an article published in the scientific reference journal Nature confirmed this.
Compiled from /ScitechDaily