What does K mean in astronomical temperature?

Answer 1

Temperatures are measured on a variety of scales.

The three most common are Fahrenheit (ºF), Celsius (ºC) and Kelvin (ºK)

The kelvin Scale is the SI unti of temperature - the international standard

The Kelvin scale begins at what known as Absolute Zero ..... 0ºK = -273.15ºC

Answer 2

K is the abbreviation for Kelvin, a unit of temperature. It's more or less the unit used for scientific purposes and not commercial use (usually the US weather reports are in Fahrenheit degrees and not Kelvins).

To convert from Celsius to Kelvins: [K] = [°C] + 273.15

To convert from Fahrenheit to Kelvins: [K] = ([°F] + 459.67) × 5⁄9

Answer 3

In astronomical temperature, K represents Kelvin, the unit of temperature used in scientific measurements. It is the absolute temperature scale where 0 K represents absolute zero, the lowest possible temperature at which all thermal motion ceases in matter.