diff --git a/CHANGES.rst b/CHANGES.rst
index c838bf4..8dccc8c 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -3,6 +3,8 @@
 
 * Prevent duplicate sub-intervals (quarter/sector/campaign) in data labels. [#120]
 
+* Add feature to query the NASA Exoplanet Archive for exoplanet ephemerides. [#127]
+
 0.4.3 (unreleased)
 ------------------
 
diff --git a/lcviz/conftest.py b/lcviz/conftest.py
index 5be4d22..a5bbd36 100644
--- a/lcviz/conftest.py
+++ b/lcviz/conftest.py
@@ -37,9 +37,15 @@ def light_curve_like_kepler_quarter(seed=42):
     )
     lc['flux_alt'] = flux + 1
     lc['flux_alt_err'] = flux_err
-    lc.meta['MISSION'] = 'KEPLER'
-    lc.meta['QUARTER'] = 10
-    lc.meta['OBJECT'] = 'HAT-P-11'
+    lc.meta.update(
+        {
+            'MISSION': 'KEPLER',
+            'QUARTER': 10,
+            'OBJECT': 'HAT-P-11',
+            'RA': 297.7101763,
+            'DEC': 48.0818635,
+        }
+    )
 
     return lc
 
diff --git a/lcviz/plugins/ephemeris/ephemeris.py b/lcviz/plugins/ephemeris/ephemeris.py
index e24c6c9..b51f618 100644
--- a/lcviz/plugins/ephemeris/ephemeris.py
+++ b/lcviz/plugins/ephemeris/ephemeris.py
@@ -627,7 +627,8 @@ def query_for_ephemeris(self):
         if self.query_name:
             # first query by object name:
             query_result = self.nasa_exoplanet_archive.query_object(
-                self.query_name, table='pscomppars'
+                object_name=self.query_name,
+                table='pscomppars'
             )
 
         if (
@@ -637,8 +638,9 @@ def query_for_ephemeris(self):
             # next query by coordinates:
             coord = SkyCoord(ra=self.query_ra, dec=self.query_dec, unit=u.deg)
             query_result = self.nasa_exoplanet_archive.query_region(
-                coord, self.query_radius * u.arcsec,
-                table='pscomppars'
+                table='pscomppars',
+                coordinates=coord,
+                radius=self.query_radius * u.arcsec,
             )
 
         if query_result is None or len(query_result) == 0:
diff --git a/lcviz/tests/test_plugin_ephemeris.py b/lcviz/tests/test_plugin_ephemeris.py
index abc0252..d268e46 100644
--- a/lcviz/tests/test_plugin_ephemeris.py
+++ b/lcviz/tests/test_plugin_ephemeris.py
@@ -134,6 +134,17 @@ def test_create_phase_viewer(helper, light_curve_like_kepler_quarter):
     assert len(vc.viewer_types) == 3
 
 
+def compare_against_literature_ephemeris(helper, ephem):
+    # compare against best/recent parameters:
+    period_yee_2018 = 4.88780244
+    assert abs(1 - period_yee_2018 / ephem.period) < 1e-3
+
+    epoch_kokori_2022 = 2455109.335119
+    ref_time = helper.app.data_collection[0].coords.reference_time.jd
+    expected_t0 = (epoch_kokori_2022 - ref_time) % period_yee_2018
+    assert abs(1 - expected_t0 / ephem.t0) < 1e-3
+
+
 def test_ephemeris_queries(helper, light_curve_like_kepler_quarter):
     helper.load_data(light_curve_like_kepler_quarter)
     ephem = helper.plugins['Ephemeris']
@@ -146,11 +157,22 @@ def test_ephemeris_queries(helper, light_curve_like_kepler_quarter):
     ephem.query_result = planet
     ephem.adopt_from_catalog()
 
-    # compare against best/recent parameters:
-    period_yee_2018 = 4.88780244
-    assert abs(1 - period_yee_2018 / ephem.period) < 1e-3
+    compare_against_literature_ephemeris(helper, ephem)
 
-    epoch_kokori_2022 = 2455109.335119
-    ref_time = helper.app.data_collection[0].coords.reference_time.jd
-    expected_t0 = (epoch_kokori_2022 - ref_time) % period_yee_2018
-    assert abs(1 - expected_t0 / ephem.t0) < 1e-3
+
+def test_ephemeris_query_no_name(helper, light_curve_like_kepler_quarter):
+    # test that the query successfully falls back on the RA/Dec:
+    light_curve_like_kepler_quarter.meta['OBJECT'] = ''
+
+    helper.load_data(light_curve_like_kepler_quarter)
+    ephem = helper.plugins['Ephemeris']
+
+    ephem.query_for_ephemeris()
+    # this should be HAT-P-11 b:
+    planet = ephem.query_result.choices[0]
+    assert planet == 'HAT-P-11 b'
+
+    ephem.query_result = planet
+    ephem.adopt_from_catalog()
+
+    compare_against_literature_ephemeris(helper, ephem)