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地球自转公报b报

IERS Bulletin B provides current information on the Earth's orientation in the IERS Reference System. This includes Universal Time, coordinates of the terrestrial pole, and celestial pole offsets. 

IERS Bulletin B consists of 5 sections:

Section 1: 

Daily final values at 0:00 UT of x, y, UT1-UTC, dX, dY, and their uncertainties. Time span: one month with final values, one month with preliminary values.

Section 2: 

Daily final values at 0:00 UT of celestial pole offsets dPsi and dEps in the IAU 1980 system and their uncertainties.

Section 3: 

Earth angular velocity (daily estimates of LOD and OMEGA with their uncertainties).

Section 4: 

Information on the time scales and announcement of occurring leap seconds.

Section 5: 

Average formal precision of the individual and combined series contributing or not to the combination and their agreement with the combination.