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If the package IERS B file (`iers.IERS_B_FILE) is out of date, a new version can be downloaded from iers.IERS_B_URL.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

Cached table, returned if open is called without arguments.

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=22248>  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   ...   ...   ...     ...       ... ...       ...     ...        ...        ...  2022    11    20 59903.0  0.174678 ...   9.1e-06 7.2e-06    6.9e-05    5.8e-05  2022    11    21 59904.0  0.172482 ...   8.9e-06 7.1e-06    6.8e-05    5.6e-05  2022    11    22 59905.0  0.170135 ...  1.05e-05   7e-06    6.8e-05    5.5e-05  2022    11    23 59906.0  0.167864 ...  1.01e-05 7.1e-06    6.8e-05    5.4e-05  2022    11    24 59907.0  0.165815 ...     1e-05 7.1e-06    6.7e-05    5.4e-05  2022    11    25 59908.0  0.163449 ...   9.7e-06 7.1e-06    6.7e-05    5.4e-05  2022    11    26 59909.0  0.160439 ...   9.5e-06   7e-06    6.7e-05    5.3e-05  2022    11    27 59910.0  0.156985 ...   9.4e-06   7e-06    6.7e-05    5.2e-05  2022    11    28 59911.0  0.153168 ...   9.4e-06 6.5e-06    6.7e-05    5.1e-05  2022    11    29 59912.0  0.149881 ...   9.3e-06 7.1e-06    6.6e-05    5.1e-05

Cached table, returned if open is called without arguments.

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:

filepython:str

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

readmepython:str

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

data_startpython:int

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