Supernova 1181
The 1181 supernova was a galactic supernova observed in 1181 by Chinese and Japanese astronomers in the constellation Cassiopeia . It reached a brightness of 0 mag and was visible for 6 months. Her remnant is the nebula 3C 58 .
Coordinates
- Right ascension: 2 h 06 m
- Declination: + 64 ° 49 '