Pronunciation: [planˈiːmə͡ʊ] (IPA) 
The word "PLANEMO" is a combination of two words - "planet" and "emo" - which refers to a type of planet that is not orbiting a star. The IPA phonetic transcription of "PLANEMO" is /plænɛmoʊ/, with the "pl" sound pronounced as in "plan", "æ" as in "cat", "n" as in "no", "ɛ" as in "dress", "m" as in "man", "oʊ" as in "go". This spelling accurately represents the pronunciation of the word and helps avoid confusion.
A planemo, short for planetary-mass object, refers to a celestial body that shares characteristics of both a planet and a brown dwarf. The term "planemo" combines the words "planet" and "brown dwarf" to describe an object that falls in the mass range between these two categories.
A planemo is typically a solitary object, not orbiting any star. It forms from the condensation of gas and dust in a manner similar to how a star forms. Planemos hold significant mass, generally within the range of 1 to 20 times the mass of Jupiter, making them larger than typical planets in our solar system yet smaller than a star. Due to their substantial masses, they possess enough gravitational force to undergo nuclear fusion like stars, but they do not reach the critical mass required for sustaining sustained fusion.
Planemos are often composed primarily of hydrogen and helium, like gas giants such as Jupiter and Saturn. However, they lack the clear orbital path established around a star that defines planets, making their identification challenging. Consequently, scientists often distinguish planemos based on their characteristics of temperature, luminosity, and atmospheric composition.
The discovery of planemos expands our understanding of celestial objects, providing insight into the formation and diversity of objects beyond our solar system. By studying planemos, scientists can gain further knowledge about the processes involved in star and planet formation, as well as the unique properties and behavior exhibited by these intermediate objects.
