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:
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) is out of date, a new version can be downloaded fromiers.IERS_B_URL
.Attributes Summary
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.
Set UT1-UTC source flag for entries in IERS table
Attributes Documentation
- iers_table = <IERS_B length=22218> 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 10 21 59873.0 0.237688 ... 1.08e-05 6.8e-06 8.1e-05 8.3e-05 2022 10 22 59874.0 0.234606 ... 1.07e-05 6.8e-06 8.1e-05 8.2e-05 2022 10 23 59875.0 0.231878 ... 1.06e-05 6e-06 8e-05 8e-05 2022 10 24 59876.0 0.230043 ... 1.13e-05 6.9e-06 8e-05 7.9e-05 2022 10 25 59877.0 0.228137 ... 1.08e-05 6.9e-06 8e-05 7.7e-05 2022 10 26 59878.0 0.226115 ... 1.03e-05 7e-06 7.9e-05 7.6e-05 2022 10 27 59879.0 0.223756 ... 1.09e-05 7e-06 7.9e-05 7.4e-05 2022 10 28 59880.0 0.220823 ... 1.08e-05 7e-06 7.9e-05 7.2e-05 2022 10 29 59881.0 0.217709 ... 1.07e-05 7.1e-06 7.8e-05 7e-05 2022 10 30 59882.0 0.214473 ... 1.05e-05 7.1e-06 7.8e-05 6.7e-05¶
Cached table, returned if
open
is called without arguments.
Methods Documentation
- classmethod read(file=None, readme=None, data_start=14)[source]¶
Read IERS-B table from a eopc04_iau2000.* file provided by IERS.
- Parameters
- file
python:str
full path to ascii file holding IERS-B data. Defaults to package version,
iers.IERS_B_FILE
.- readme
python:str
full path to ascii file holding CDS-style readme. Defaults to package version,
iers.IERS_B_README
.- data_start
python:int
starting row. Default is 14, appropriate for standard IERS files.
- file
- Returns
IERS_B
class instance