Bulletin B - Product metadata

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.

ASCII

See contents of the data files or
ftp://hpiers.obspm.fr/iers/bul/bulb_new/bulletinb.pdf

See contents of the data files and
ftp://hpiers.obspm.fr/iers/bul/bulb_new/bulletinb.pdf

Section 1: Year[yyyy],Month [mm], Day [dd], MJD, x [marcsec], y [marcsec], UT1-UTC [ms], dX [marcsec], dY [marcsec],x err[marcsec], y err[marcsec],UT1 err[marcsec], X err[marcsec], Y err[marcsec],

Section 2: Year[yyyy],Month [mm], Day [dd], MJD, dPsi1980[marcsec],dEps1980[marcsec],sig dPsi[marcsec],sig dEps[marcsec]

Section 3: Year[yyyy],Month [mm], Day [dd], MJD,LOD[ms],sigma[ms],OMEGA[mas/ms],sigma[mas/ms],

Section 4: TAI - UTC [s],

Section 5: RMS of x [marcsec], y [mas ], UT1 [ms], LOD[ms], dX [marcsec], dY [marcsec], Number of points

Cf. ftp://hpiers.obspm.fr/iers/bul/bulb_new/bulletinb.pdf and contents of the data files.

monthly

http://hpiers.obspm.fr/iers/bul/bulb_new/

IERS Earth Orientation Centre

IERS Earth Orientation Centre

services.iers@obspm.fr

onLine

http://hpiers.obspm.fr/eop-pc/products/bulletins/subscription.html OR http://www.iers.org/subscription.html