What is the Surface Temperature of Neptune?

What is the Surface Temperature of Neptune?

Orbital Characteristics:

"Surface" Temperature:

Due to their composition, determining a surface temperature on gas or ice giants (compared to terrestrial planets or moons) is technically impossible. As a result, astronomers have relied on measurements obtained at altitudes where the atmospheric pressure is equal to 1 bar (or 100 kilo Pascals), the equivalent of air pressure here on Earth at sea level.

Temperature Anomalies and Variations: