WR 121-16 is a transitional Wolf-Rayet star in the constellation of Scutum, near the Wild Duck Cluster (M11).
It is very dim from Earth, having an apparent magnitude of about 14,[2] from being so reddened by interstellar extinction, and its distance of over 23,000 light years.
[2] WR 121-16 is one of a few transitional Wolf-Rayet stars, which display both carbon and nitrogen emission, with a spectral type of WN7o/WC.
Modelling the spectrum shows that WR 121-16 is not very luminous at all, with a luminosity of just 75,900 L☉, much less than most Wolf-Rayet stars.
[2] Strong stellar winds, typical of Wolf-Rayet stars, with a terminal velocity of 1,000 kilometers per second are causing WR 121-16 to lose 10−4.97 M☉/year,[2] much more than the Sun's (2-3) x 10−14 solar masses per year.