dubbed IRAS 09371+1212 as the "Frosty Leo Nebula" because of their interpretation of the object's extremely unusual far infrared spectrum that water is largely depleted in its gaseous state by ice condensation into grains and for its location in the Leo constellation.
The IRAS 09371+1212 was dubbed the "Frosty Leo Nebula" by astronomers because of their interpretation of the object's unusually cold infrared spectrum, which suggested that water is mostly in a solid state due to condensation into ice grains and its location within the Leo constellation.