What apparent magnitude is T Coronae Borealis (T CrB) expected to reach during an eruption?
Answer
Around 3.
The system T Coronae Borealis (T CrB) is under intense scrutiny because it is a known recurrent nova whose next eruption is highly anticipated. Theoretical models predict that when T CrB does erupt, it will brighten substantially, achieving an apparent magnitude of approximately 3. An object reaching magnitude 3 is significant because it is easily visible to the unaided human eye when observed under dark sky conditions. This predicted brightness ensures that the event, once confirmed, will be a spectacular, globally visible event for sky-watchers, marking it as a significant naked-eye occurrence.
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