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 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) is out of date, a new version can be downloaded fromiers.IERS_B_URL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=21611> 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 2 21 59266.0 0.051463 ... 1.23e-05 7.3e-06 0.000108 0.00011 2021 2 22 59267.0 0.0507 ... 1.25e-05 7.3e-06 0.00011 0.000112 2021 2 23 59268.0 0.049836 ... 1.25e-05 7.3e-06 0.000111 0.000114 2021 2 24 59269.0 0.049396 ... 1.32e-05 7.2e-06 0.000113 0.000116 2021 2 25 59270.0 0.049801 ... 1.3e-05 7.2e-06 0.000114 0.000117 2021 2 26 59271.0 0.050306 ... 1.28e-05 7.2e-06 0.000116 0.000118 2021 2 27 59272.0 0.050431 ... 1.29e-05 7.2e-06 0.000117 0.000118 2021 2 28 59273.0 0.050498 ... 1.29e-05 6.5e-06 0.000118 0.000117 2021 3 1 59274.0 0.050616 ... 1.26e-05 7.2e-06 0.00012 0.000117 2021 3 2 59275.0 0.050706 ... 1.27e-05 7.2e-06 0.000121 0.000116¶ 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
- filestr
full path to ascii file holding IERS-B data. Defaults to package version,
iers.IERS_B_FILE
.- readmestr
full path to ascii file holding CDS-style readme. Defaults to package version,
iers.IERS_B_README
.- data_startint
starting row. Default is 14, appropriate for standard IERS files.
- Returns
IERS_B
class instance
-