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
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) is out of date, a new version can be downloaded fromiers.IERS_B_URL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=21905> 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 ... ... ... ... ... ... ... ... ... ... 2021 12 12 59560.0 0.095231 ... 7.4e-06 6.2e-06 5.7e-05 4.5e-05 2021 12 13 59561.0 0.092509 ... 7.6e-06 6.2e-06 5.7e-05 4.6e-05 2021 12 14 59562.0 0.090306 ... 7.1e-06 6.2e-06 5.8e-05 4.6e-05 2021 12 15 59563.0 0.087829 ... 6.9e-06 6.2e-06 5.8e-05 4.7e-05 2021 12 16 59564.0 0.085353 ... 6.9e-06 6.1e-06 5.9e-05 4.8e-05 2021 12 17 59565.0 0.082621 ... 6.7e-06 6.1e-06 5.9e-05 4.8e-05 2021 12 18 59566.0 0.080179 ... 6.9e-06 6.1e-06 6e-05 4.8e-05 2021 12 19 59567.0 0.078732 ... 6.9e-06 6.1e-06 6e-05 4.8e-05 2021 12 20 59568.0 0.077355 ... 6.9e-06 6.1e-06 6e-05 4.8e-05 2021 12 21 59569.0 0.075405 ... 6.8e-06 6.1e-06 6.1e-05 4.8e-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