IERS_B

class astropy.utils.iers.IERS_B(data=None, masked=False, names=None, dtype=None, meta=None, copy=True, rows=None, copy_indices=True, units=None, descriptions=None, **kwargs)

Bases: astropy.utils.iers.IERS

IERS Table class targeted to IERS B, provided by IERS itself.

These are final values; see https://www.iers.org/IERS/EN/Home/home_node.html

Notes

If the package IERS B file (`iers.IERS_B_FILE) is out of date, a new version can be downloaded from iers.IERS_B_URL.

Attributes Summary

iers_table

Methods Summary

dcip_source(self, i)	Set CIP correction source flag for entries in IERS table
pm_source(self, i)	Set PM source flag for entries in IERS table
read([file, readme, data_start])	Read IERS-B table from a eopc04_iau2000.* file provided by IERS.
ut1_utc_source(self, i)	Set UT1-UTC source flag for entries in IERS table

Attributes Documentation

iers_table = <IERS_B length=21296> year month day MJD PM_x ... e_UT1_UTC e_LOD e_dX_2000A e_dY_2000A d arcsec ... s s arcsec arcsec int64 int64 int64 float64 float64 ... float64 float64 float64 float64 ----- ----- ----- ------- --------- ... --------- -------- ---------- ---------- 1962 1 1 37665.0 -0.0127 ... 0.002 0.0014 0.004774 0.002 1962 1 2 37666.0 -0.0159 ... 0.002 0.0014 0.004774 0.002 1962 1 3 37667.0 -0.019 ... 0.002 0.0014 0.004774 0.002 1962 1 4 37668.0 -0.021999 ... 0.002 0.0014 0.004774 0.002 1962 1 5 37669.0 -0.024799 ... 0.002 0.0014 0.004774 0.002 1962 1 6 37670.0 -0.027599 ... 0.002 0.0014 0.004774 0.002 1962 1 7 37671.0 -0.030199 ... 0.002 0.0014 0.004774 0.002 1962 1 8 37672.0 -0.032798 ... 0.002 0.0014 0.004774 0.002 1962 1 9 37673.0 -0.035198 ... 0.002 0.0014 0.004774 0.002 ... ... ... ... ... ... ... ... ... ... 2020 4 12 58951.0 0.059085 ... 6e-06 1.28e-05 5.9e-05 4.4e-05 2020 4 13 58952.0 0.05977 ... 6e-06 1.28e-05 6e-05 4.3e-05 2020 4 14 58953.0 0.060954 ... 6e-06 1.28e-05 6e-05 4.3e-05 2020 4 15 58954.0 0.062103 ... 5.9e-06 1.29e-05 6e-05 4.3e-05 2020 4 16 58955.0 0.062909 ... 6e-06 1.3e-05 6.1e-05 4.4e-05 2020 4 17 58956.0 0.063857 ... 6.2e-06 1.3e-05 6.2e-05 4.5e-05 2020 4 18 58957.0 0.064553 ... 6.3e-06 1.31e-05 6.3e-05 4.6e-05 2020 4 19 58958.0 0.064401 ... 6.4e-06 1.32e-05 6.3e-05 4.8e-05 2020 4 20 58959.0 0.063799 ... 6.6e-06 1.32e-05 6.4e-05 5e-05 2020 4 21 58960.0 0.063206 ... 6.7e-06 1.33e-05 6.5e-05 5.1e-05

Methods Documentation

dcip_source(self, i)

Set CIP correction source flag for entries in IERS table

pm_source(self, i)

Set PM source flag for entries in IERS table

classmethod read(file=None, readme=None, data_start=14)

Read IERS-B table from a eopc04_iau2000.* file provided by IERS.

Parameters

filestr

full path to ascii file holding IERS-B data. Defaults to package version, iers.IERS_B_FILE.

readmestr

full path to ascii file holding CDS-style readme. Defaults to package version, iers.IERS_B_README.

data_startint

starting row. Default is 14, appropriate for standard IERS files.

Returns

IERS_B class instance

ut1_utc_source(self, i)

Set UT1-UTC source flag for entries in IERS table