diff --git a/src/constellations.ts b/src/constellations.ts
index d5a1247..e5ea050 100644
--- a/src/constellations.ts
+++ b/src/constellations.ts
@@ -94,6 +94,7 @@ export { sextans } from './constellations/sextans'
 export { taurus } from './constellations/taurus'
 export { telescopium } from './constellations/telescopium'
 export { triangulum } from './constellations/triangulum'
+export { triangulumAustralae } from './constellations/triangulumAustralae'
 
 /*****************************************************************************************************************/
 
diff --git a/src/constellations/index.ts b/src/constellations/index.ts
index b68ca00..a4d493a 100644
--- a/src/constellations/index.ts
+++ b/src/constellations/index.ts
@@ -86,5 +86,6 @@ export { sextans } from './sextans'
 export { taurus } from './taurus'
 export { telescopium } from './telescopium'
 export { triangulum } from './triangulum'
+export { triangulumAustralae } from './triangulumAustralae'
 
 /*****************************************************************************************************************/
diff --git a/src/constellations/triangulumAustralae.ts b/src/constellations/triangulumAustralae.ts
new file mode 100644
index 0000000..6c7c9f0
--- /dev/null
+++ b/src/constellations/triangulumAustralae.ts
@@ -0,0 +1,79 @@
+/*****************************************************************************************************************/
+
+// @author         Michael Roberts <michael@observerly.com>
+// @package        @observerly/astrometry/triangulumAustralae
+// @license        Copyright © 2021-2024 observerly
+
+/*****************************************************************************************************************/
+
+import type { EquatorialCoordinate } from '../common'
+
+import { createConstellationAsGeoJSON } from './create'
+
+/*****************************************************************************************************************/
+
+const centrum: EquatorialCoordinate = {
+  ra: 240.8936041,
+  dec: -67.7123117
+}
+
+/*****************************************************************************************************************/
+
+// prettier-ignore
+const aster: number[][][] = [
+  // Atria to β Trianguli Australis:
+  [
+    [252.166229, -69.027712],
+    [238.786708, -63.429750]
+  ],
+  // β Trianguli Australis to γ Trianguli Australis:
+  [
+    [238.786708, -63.429750],
+    [229.727875, -68.679472]
+  ],
+  // γ Trianguli Australis to Atria:
+  [
+    [229.727875, -68.679472],
+    [252.166229, -69.027712]
+  ]
+]
+
+/*****************************************************************************************************************/
+
+// prettier-ignore
+const boundaries: number[][][] = [
+  [
+    [224.166441, -70.511543],
+    [224.003634, -68.012207],
+    [226.557126, -67.990929],
+    [226.353535, -64.075127],
+    [230.166579, -64.041565],
+    [230.054570, -61.458748],
+    [232.589765, -61.435307],
+    [232.549868, -60.435493],
+    [249.034681, -60.264458],
+    [249.081630, -61.264195],
+    [251.537847, -61.236458],
+    [251.676321, -63.818996],
+    [254.195137, -63.790093],
+    [254.283515, -65.206253],
+    [255.542393, -65.191643],
+    [255.724983, -67.690582],
+    [258.242482, -67.661087],
+    [258.470679, -70.159744],
+    [224.166441, -70.511543]
+  ]
+]
+
+/*****************************************************************************************************************/
+
+// https://www.iau.org/public/themes/constellations/#tra
+export const triangulumAustralae = createConstellationAsGeoJSON(
+  'Triangulum Australe',
+  'the southern triangle',
+  centrum,
+  aster,
+  boundaries
+)
+
+/*****************************************************************************************************************/