Common · Knowledge
Substellar object
Astronomical object with insufficient mass to sustain nuclear fusion
A substellar object, sometimes called a substar, is an astronomical object, the mass of which is smaller than the smallest mass at which hydrogen fusion can be sustained (approximately 0.08 solar masses). This definition includes brown dwarfs, sub-brown dwarfs, and former stars similar to EF Eridani B, and can also include objects of planetary mass, regardless of their formation mechanism and whether or not they are associated with a primary star.
From Wikipedia
A substellar object, sometimes called a substar, is an astronomical object, the mass of which is smaller than the smallest mass at which hydrogen fusion can be sustained (approximately 0.08 solar masses). This definition includes brown dwarfs, sub-brown dwarfs, and former stars similar to EF Eridani B, and can also include objects of planetary mass, regardless of their formation mechanism and whether or not they are associated with a primary star.
Text: Wikipédia, CC BY-SA 4.0. · Image: Astro-logique (traduction) (CC BY-SA 4.0) ·
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