T Coronae Borealis Nova 2025 Location. T coronae borealis (t crb) is a famous recurrent nova with known eruptions in the years 1217, 1787, 1866, and 1946. T crb is a famous recurrent nova of spectral class m3.
T corona borealis (t crb) is very bright at the peak of the nova outburst, usually around 2.0 magnitudes (for reference, polaris, aka the north star, is about this brightness). It lies in the constellation of the northern crown, prominent in the northern hemisphere but also visible.