On May 13, 2017, an amateur astronomer discovered a supernova in the galaxy NGC 6946. The galaxy is located at a distance of 22 million
| November 15, 2020 | Education
On May 13, 2017, an amateur astronomer discovered a supernova in the galaxy NGC 6946. The galaxy is located at a distance of 22 million light years. Estimate what apparent magnitude the supernova had at its maximum brightness, if it was of the second type.
decision
M = m + 5-51gD, m = M-5 + 51gD, m = -15-5 + 51g6.74 * 10 ^ 6 = -20 + 31, m = + ll.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.