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)[source]

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If the package IERS B file (`iers.IERS_B_FILE) is out of date, a new version can be downloaded from iers.IERS_B_URL.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=21366> 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 6 21 59021.0 0.149318 ... 9.9e-06 1.3e-05 7.1e-05 6.3e-05 2020 6 22 59022.0 0.151165 ... 9.8e-06 1.3e-05 7.2e-05 6.3e-05 2020 6 23 59023.0 0.152512 ... 9.8e-06 1.31e-05 7.2e-05 6.3e-05 2020 6 24 59024.0 0.153952 ... 9.8e-06 1.32e-05 7.3e-05 6.3e-05 2020 6 25 59025.0 0.155405 ... 9.8e-06 1.32e-05 7.4e-05 6.3e-05 2020 6 26 59026.0 0.156914 ... 9.8e-06 1.33e-05 7.4e-05 6.3e-05 2020 6 27 59027.0 0.158872 ... 9.9e-06 1.33e-05 7.5e-05 6.3e-05 2020 6 28 59028.0 0.160841 ... 9.9e-06 1.34e-05 7.6e-05 6.3e-05 2020 6 29 59029.0 0.16274 ... 9.8e-06 1.35e-05 7.6e-05 6.3e-05 2020 6 30 59030.0 0.164783 ... 9.8e-06 1.35e-05 7.7e-05 6.3e-05

Methods Documentation

dcip_source(i)[source]

Set CIP correction source flag for entries in IERS table

pm_source(i)[source]

Set PM source flag for entries in IERS table

classmethod read(file=None, readme=None, data_start=14)[source]

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)[source]

Set UT1-UTC source flag for entries in IERS table