diff --git a/src/app/features/galaxy-system/system-orbits-renderer.spec.ts b/src/app/features/galaxy-system/system-orbits-renderer.spec.ts
index a37df6b..0512976 100644
--- a/src/app/features/galaxy-system/system-orbits-renderer.spec.ts
+++ b/src/app/features/galaxy-system/system-orbits-renderer.spec.ts
@@ -1,5 +1,5 @@
 import * as THREE from 'three/webgpu';
-import { describe, expect, it } from 'vitest';
+import { describe, expect, it, vi } from 'vitest';
 
 import { DEFAULT_EPOCH_JD, GM_SUN_AU3_PER_DAY2, TT_MINUS_UTC_DAYS, ttMinusUtSeconds } from '../../shared/astro/constants';
 import { keplerRates } from '../../shared/astro/kepler';
@@ -465,6 +465,13 @@ describe('derived surfaces', () => {
     renderer.dispose();
   });
 
+  it('builds a body still waiting for its surface without three warning of an undefined map', () => {
+    const warn = vi.spyOn(console, 'warn');
+    twoPlanets().dispose();
+    expect(warn.mock.calls.flat().join(' ')).not.toContain("parameter 'map'");
+    warn.mockRestore();
+  });
+
   it('paints nothing once the system is left', async () => {
     const renderer = twoPlanets();
     renderer.dispose();
diff --git a/src/app/features/galaxy-system/system-orbits-renderer.ts b/src/app/features/galaxy-system/system-orbits-renderer.ts
index fdadb0f..7b209b7 100644
--- a/src/app/features/galaxy-system/system-orbits-renderer.ts
+++ b/src/app/features/galaxy-system/system-orbits-renderer.ts
@@ -180,7 +180,9 @@ function buildMarker(
 ): THREE.Mesh {
   const geometry = new THREE.SphereGeometry(bodyMarkerRadiusAu(radiusKm), MARKER_WIDTH_SEGMENTS, MARKER_HEIGHT_SEGMENTS);
   const photograph = id ? bodyTexturePath(id) : undefined;
-  const map = photograph ? loadCachedTexture(photograph) : undefined;
+  // null, not undefined, where there is none yet: three warns "parameter 'map' has value of
+  // undefined" for every body built so, eleven of them on entering the Sun's system.
+  const map = photograph ? loadCachedTexture(photograph) : null;
   const material = new THREE.MeshStandardMaterial({
     map,
     color: map ? 0xffffff : colorForKind(kind),