This cluster has several O-type stars, super hot stars that generate large amounts of radiation and stellar wind.

The age of this cluster has been estimated to be less than 5 million years.

The brightest star in the direction of the cluster is 12 Monocerotis, a foreground K-class giant.

A study from 2023 found that brown dwarfs in NGC 2244 form closer to OB-stars than to other stars.

[6] One cluster member was discovered in the past to show signs of an eroding disk, reminiscent of a proplyd.