A Cepheid variable has a period of 17 days and an average apparent magnitude of 23. Find its distance from us. The absol
Posted: Wed May 18, 2022 6:37 am
A Cepheid variable has a period of 17 days and an average apparent magnitude of 23. Find its distance from us. The absolute magnitude of the Sun is 4.83. ОЗМрс 3 0.3 Mpc O 300 Mpc O 30 Mpc