IERS_B

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

Bases: astropy.utils.iers.IERS

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

These are final values; see http://www.iers.org/

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If the package IERS B file (`iers.IERS_B_FILE) is out of date, a new version can be downloaded from iers.IERS_B_URL.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

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=19861> 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 ... ... ... ... ... ... ... ... ... ... 2016 5 11 57519.0 0.052257 ... 8.3e-06 1.93e-05 3.8e-05 5.1e-05 2016 5 12 57520.0 0.054309 ... 8.3e-06 1.92e-05 3.8e-05 5.1e-05 2016 5 13 57521.0 0.056405 ... 8.3e-06 1.9e-05 3.7e-05 5e-05 2016 5 14 57522.0 0.058448 ... 8.3e-06 1.88e-05 3.7e-05 4.9e-05 2016 5 15 57523.0 0.06049 ... 8.2e-06 1.86e-05 3.6e-05 4.7e-05 2016 5 16 57524.0 0.062539 ... 8.1e-06 1.85e-05 3.5e-05 4.5e-05 2016 5 17 57525.0 0.064598 ... 7.9e-06 1.83e-05 3.5e-05 4.4e-05

Methods Documentation

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:

file : str

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

readme : str

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

data_start : 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