Morphology of the Vela Jr. supernova remnant and ultraviolet emission flux from the remnant in the estimates of object's age and distance to it

Aim: to study the morphology of the supernova remnant RX J0852.0-4622 in different wavelength ranges to determine the distance to the object and its age. Materials and methods: in the work were used data on the radiation of RX J0852.0-4622 in extreme ultraviolet at a wavelength of 83 Å, obtained by the EUVE satellite. To calculate the photon counting rate from the remnant, a program was written that allows the required processing of files in the FITS format. The calculation of the UV radiation flux was carried out using the PIMMS software. The morphology of the remnant was determined from its images in the UV, X-ray, radio and gamma bands. Results: the flux of extreme UV radiation from RX J0852.0-4622 takes values in the range 2.128-6.390 photons sm^(-2) s^(-1). The morphology of the supernova remnant RX J0852.0-4622 has a bipolar structure: a two-ring structure has been revealed. Distance to Vela Jr.: 275 parsecs, age of the remnant: 600-1200 years. Conclusion: the calculated flux of extreme UV indicates the close location of the object relative to the Earth. The obtained values of the distance to the remainder of RX J0852.0-4622 and its age indicate that Vela Jr. is an extremely close to Earth young supernova remnant.