NML Cygni [SEP] constellation
NML Cygni
NML Cygni or V1489 Cygni is a red hypergiant (RHG) or red supergiant (RSG) in the constellation Cygnus. It is one of the largest stars currently known, and is also one of the most luminous and massive cool hypergiants, as well as one of the most luminous stars in the Milky Way. If placed at the center of the Solar System, its surface would extend past the orbit of Jupiter or Saturn.
The distance of NML Cygni from Earth is estimated to be around 1.6 kpc
IK Tauri
IK Tauri is a Mira variable star located about from the Sun in the zodiac constellation of Taurus.
Discovery.
In 1965 Neugebauer, Martz, and Leighton, astronomers with the California Institute of Technology, reported the discovery of two extremely cool stars. At the time, the temperatures of these extremely red objects were estimated to be around 1,000 K.
In the absence of other designations, these were named after the initials of their discoverers as NML Cygni and NML Tauri. It was identified as a Mira