* Low Mass: Red dwarfs are the smallest and least massive stars, typically having less than half the mass of our Sun.
* Low Temperature: They burn hydrogen fuel very slowly, resulting in surface temperatures of around 2,500 to 3,500 Kelvin (about 4,000 to 6,000 degrees Fahrenheit). This makes them appear reddish in color.
* Low Absolute Magnitude: Absolute magnitude measures a star's intrinsic brightness. Because red dwarfs are cool and faint, their absolute magnitudes are low, typically around 10 to 16. This means they are very dim compared to other stars.
Key Takeaway: The combination of low mass, low temperature, and low absolute magnitude defines a red dwarf star.
