RT Normae is an R Coronae Borealis type

variable star A variable star is a star whose brightness as seen from Earth (its apparent magnitude) changes systematically with time. This variation may be caused by a change in emitted light or by something partly blocking the light, so variable stars are ...

in the

constellation A constellation is an area on the celestial sphere in which a group of visible stars forms Asterism (astronomy), a perceived pattern or outline, typically representing an animal, mythological subject, or inanimate object. The first constellati ...

Norma Norma may refer to: * Norma (given name), a given name (including a list of people with the name) ** Norma Lizbeth Ramos, a Mexican bullying victim Astronomy *Norma (constellation) * 555 Norma, a minor asteroid * Cygnus Arm or Norma Arm, a spiral ...

. It has a baseline magnitude of 9.8, dropping down to 14.7 at its minima. It has less than 55% the mass of the Sun and an effective (surface) temperature of around 7000 K.

References

{{DEFAULTSORT:RT Normae Normae, RT R Coronae Borealis variables Norma (constellation) 080365 Carbon stars Durchmusterung objects