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python-astropy/astropy-pr15479-pvstar.patch
2023-11-08 01:55:18 +00:00

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Diff

From c15ad2fcd21182787eb7db2195bfc70690efca2e Mon Sep 17 00:00:00 2001
From: "P. L. Lim" <2090236+pllim@users.noreply.github.com>
Date: Fri, 13 Oct 2023 14:40:52 -0400
Subject: [PATCH] Backport PR #15476: Account for SOFA/ERFA bugfix in pvstar
---
astropy/units/tests/test_structured_erfa_ufuncs.py | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/astropy/units/tests/test_structured_erfa_ufuncs.py b/astropy/units/tests/test_structured_erfa_ufuncs.py
index 729f9539c7e..42589397a19 100644
--- a/astropy/units/tests/test_structured_erfa_ufuncs.py
+++ b/astropy/units/tests/test_structured_erfa_ufuncs.py
@@ -139,7 +139,11 @@ def test_pvstar(self):
assert px.unit == u.arcsec
assert_quantity_allclose(px, 1 * u.radian)
assert rv.unit == u.km / u.s
- assert_array_equal(rv.value, np.zeros(self.pv.shape))
+ # RV is non-zero because proper motion induces a small redshift
+ # due to second order Doppler shift.
+ assert_quantity_allclose(
+ rv, np.zeros(self.pv.shape) << (u.km / u.s), atol=1 * u.m / u.s
+ )
def test_starpv(self):
ra, dec, pmr, pmd, px, rv, stat = erfa_ufunc.pvstar(self.pv)