
TY  - JOUR
A1  - Balfe, JD 
T1  - Moon Camera Values of ?T = ET? UT
JF  - Australian Journal of Physics
JO  - Aust. J.  Phys.
Y1  - 1963
VL  - 16
IS  - 2
SP  - 279
EP  - 281
KW  - 
UR  - https://doi.org/10.1071/PH630279 
N2  - The ephemeris scale of time is based on the revolution of the Earth around the Sun. In 1956 the International Committee of Weights and Measures adopted a new definition of the second, the fundamental unit of time, in terms of ephemeris time. The second is the fraction 1/31556925· 9747 of the tropical year for 1900 January 0 at 12 hours, ephemeris time. 
ER  -

