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) is out of date, a new version can be downloaded fromiers.IERS_B_URL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=22003> 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 3 20 59658.0 0.033017 ... 1.16e-05 7.2e-06 6.5e-05 8e-05 2022 3 21 59659.0 0.033291 ... 1.17e-05 7.1e-06 6.5e-05 8e-05 2022 3 22 59660.0 0.034163 ... 1.09e-05 7.1e-06 6.6e-05 8e-05 2022 3 23 59661.0 0.035739 ... 1.09e-05 7.1e-06 6.6e-05 8e-05 2022 3 24 59662.0 0.037184 ... 1.18e-05 7.2e-06 6.7e-05 8e-05 2022 3 25 59663.0 0.038276 ... 1.18e-05 7.1e-06 6.7e-05 8e-05 2022 3 26 59664.0 0.039275 ... 1.18e-05 7.1e-06 6.7e-05 7.9e-05 2022 3 27 59665.0 0.040293 ... 1.26e-05 4.3e-06 6.8e-05 7.8e-05 2022 3 28 59666.0 0.041691 ... 1.19e-05 7.1e-06 6.8e-05 7.7e-05 2022 3 29 59667.0 0.042792 ... 1.24e-05 7.1e-06 6.8e-05 7.6e-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