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Remove units.deprecated in 9.0

API changePRs and issues that change an existing API, possibly requiring a deprecation periodPRs and issues that change an existing API, possibly requiring a deprecation period

units

Status: Open.

#18018 In astropy/astropy;

· mhvk opened on Apr 16, 2025

API: Remove the compatibility code and use of chararray in io.fits

API changePRs and issues that change an existing API, possibly requiring a deprecation periodPRs and issues that change an existing API, possibly requiring a deprecation period

io.fits

Status: Open.

#19311 In astropy/astropy;

· pllim opened on Feb 20, 2026

DEV: See if we can simplify auto update of astropy-iers-data

dev-automation

Status: Open.

#19495 In astropy/astropy;

· pllim opened on Mar 24, 2026

Reminder: consider removing unused, internal C code

cosmology

Refactoring

Status: Open.

#18951 In astropy/astropy;

· neutrinoceros opened on Nov 16, 2025

MNT: using milestone as the one source of truth for backport automation

dev-automation

Status: Open.

#18814 In astropy/astropy;

· neutrinoceros opened on Nov 1, 2025

MAINT: shape setting should be deprecated in astropy container classes.

API changePRs and issues that change an existing API, possibly requiring a deprecation periodPRs and issues that change an existing API, possibly requiring a deprecation period

utils.masked

Status: Open.

#19168 In astropy/astropy;

· mhvk opened on Jan 16, 2026

MNT: Remove deprecated introspection.isinstancemethod() and introspection.find_mod_objs()

API changePRs and issues that change an existing API, possibly requiring a deprecation periodPRs and issues that change an existing API, possibly requiring a deprecation period

Refactoring

utils

Status: Open.

#15936 In astropy/astropy;

· pllim opened on Jan 23, 2024

Remove deprecated introspection.isinstancemethod() and introspection.find_mod_objs()

API changePRs and issues that change an existing API, possibly requiring a deprecation periodPRs and issues that change an existing API, possibly requiring a deprecation period

utils

Status: Draft (not ready).

astropy/astropynumber 19770

#19770 In astropy/astropy;

· jomigmonte opened on May 19, 2026

Deprecated shape setting

API changePRs and issues that change an existing API, possibly requiring a deprecation periodPRs and issues that change an existing API, possibly requiring a deprecation period

coordinates

keep-open

modeling

time

Status: Draft (not ready).

astropy/astropynumber 19772

#19772 In astropy/astropy;

· Iquecs2005 opened on May 20, 2026