V838 Monocerotis
V838 Monocerotis is a binary star system in the constellation Monoceros. It is well-known due to a sudden powerful outburst in 2002. Since then, astronomers have been able to track the expanding material away from the star to learn more about it.
Hubble Space Telescope image
Facts About V838 Monocerotis:
Classification: Star, red variable
Names: V838 Monocerotis, V838 Mon, Nova Monocerotis 2002, GSC 04822-00039
Constellation: MonocerosDistance: 5.77e+16 km (6100 ly)
Magnitude: 15.6000 (app)
Surface Temperature: 3270 K