Ground-based telescopes that are watching interstellar comet Borisov, has registered two increases brightness of its nucleus in early March. It is assumed that this is due to the increased activity of the comet’s nucleus, which began the process of its gradual destruction, it is reported portal The Astronomer”s Telegram.
Comet 2I/Borisov was discovered on 30 August 2019 and soon thereafter it turned outthat its orbit has an eccentricity greater than three, which makes it the second known interstellar object. The study of such objects allows you to learn about the properties of planetesimals in protoplanetary disks around other stars, which for a comet Borisov is now following lots of ground and space telescopes. For all the short time of research I found out that it is very similar for similar objects in the Solar system, it has also been possible to estimate the length of her tail, to reveal the expiration of the molecules of CYANOGEN and to assess the rate of water loss from the surface of its nucleus.
In early December last year, the comet passed its perihelion and began to move away from the Sun. During periods 4 through 5 and 8 through March 9, 2020, in the framework of the observational campaign of the project OGLE, conducted on a 1.3 meter optical telescope, observed two increases the brightness of the comet’s nucleus. The total brightness has increased by 0.7 magnitude in the future is not reduced. Bursts of brightness was seen in other ground telescopes — e.g., the VLT in Chile. It is assumed that this is due to the increased activity of the comet’s nucleus, which began the process of its gradual destruction. In addition, the increase in brightness can also give information on the composition of the nucleus.
In the coming weeks the comet will follow the space telescope “Hubble”, which will be able to confirm the beginning of a process of fragmentation of the nucleus. Comet Borisov will remain visible to telescopes for at least another few months.
Earlier we talked about how the first open interstellar asteroid Omwamwi astronomers recognized planetesimal out of his system.