Wolfram|Alpha

Computing...

Input information:

black hole |  \nmass | 10 M_sun  (solar masses)


Results:

horizon radius | 29530 meters\nevent horizon area | 1.096×10^10 m^2  (square meters)\nsurface gravity | 1.522×10^12 m\/s^2  (meters per second squared)\ntemperature | 6.17×10^-9 K  (kelvins)\nentropy | 1.448×10^56 J\/K  (joules per kelvin)

ComputingComputing...