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If the package IERS B file (`iers.IERS_B_FILE) is out of date, a new version can be downloaded from iers.IERS_B_URL.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(i)	Set CIP correction source flag for entries in IERS table
pm_source(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(i)	Set UT1-UTC source flag for entries in IERS table

Attributes Documentation

iers_table = <IERS_B length=21448> 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 9 11 59103.0 0.210957 ... 1.09e-05 1.19e-05 9.9e-05 9.2e-05 2020 9 12 59104.0 0.210266 ... 1.09e-05 1.19e-05 9.9e-05 9e-05 2020 9 13 59105.0 0.209397 ... 1.08e-05 1.2e-05 0.0001 8.9e-05 2020 9 14 59106.0 0.208677 ... 1.08e-05 1.2e-05 0.0001 8.7e-05 2020 9 15 59107.0 0.208021 ... 1.07e-05 1.21e-05 0.0001 8.5e-05 2020 9 16 59108.0 0.207811 ... 1.08e-05 1.21e-05 0.000101 8.5e-05 2020 9 17 59109.0 0.207799 ... 1.08e-05 1.22e-05 0.000102 8.5e-05 2020 9 18 59110.0 0.207524 ... 1.08e-05 1.22e-05 0.000102 8.5e-05 2020 9 19 59111.0 0.206758 ... 1.08e-05 1.23e-05 0.000103 8.6e-05 2020 9 20 59112.0 0.205775 ... 1.09e-05 1.24e-05 0.000104 8.7e-05

Methods Documentation

dcip_source(i)

Set CIP correction source flag for entries in IERS table

pm_source(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(i)

Set UT1-UTC source flag for entries in IERS table