IERS_A

class astropy.utils.iers.IERS_A(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 A, provided by USNO.

These include rapid turnaround and predicted times. See https://datacenter.iers.org/eop.php

Notes

The IERS A file is not part of astropy. It can be downloaded from iers.IERS_A_URL or iers.IERS_A_URL_MIRROR. See iers.__doc__ for instructions on use in Time, etc.

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 polar motion source flag for entries in IERS table.
read([file, readme])	Read IERS-A table from a finals2000a.* file provided by USNO.
ut1_utc_source(i)	Set UT1-UTC source flag for entries in IERS table.

Attributes Documentation

iers_table = None

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 polar motion source flag for entries in IERS table.

classmethod read(file=None, readme=None)

Read IERS-A table from a finals2000a.* file provided by USNO.

Parameters:

filestr

full path to ascii file holding IERS-A data. Defaults to iers.IERS_A_FILE.

readmestr

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

Returns:

IERS_A class instance

ut1_utc_source(i)

Set UT1-UTC source flag for entries in IERS table.