In 2009 the acronym "MHO", for Molecular Hydrogen emission-line Object, was approved for such objects, detected in near infrared, by the International Astronomical Union Working Group on Designations, and has been entered into their on-line Reference Dictionary of Nomenclature of Celestial Objects.
2009 yılında Molecular Hydrogen emission-line Object için kullanılan MHO kısaltması The International Astronomical Union Working Group on Designations tarafından onaylandı ve onların çevrimiçi Reference Dictionary of Nomenclature of Celestial Objects sözlüğüne girdi.