diff --git a/src/data/defs.txt b/src/data/defs.txt
index 8fa49b0..d7cacbc 100644
--- a/src/data/defs.txt
+++ b/src/data/defs.txt
@@ -80,7 +80,7 @@ actor 0 0 0
         orbit 778479000e3 0.5
         id jupiter
         name Jupiter
-        scale 71492e3
+        scale 69911e3
         planet yes
         sphere yes
         ring yes
diff --git a/src/nature.rs b/src/nature.rs
index 28ba663..a0f1172 100644
--- a/src/nature.rs
+++ b/src/nature.rs
@@ -26,7 +26,7 @@ pub const C: f64 = 299792458.0; // m/s
 pub const G: f64 = 6.6743015e-11; // Gravitational constant in Nm²/kg²
 
 pub const SOL_RADIUS: f64 = 696_300_000.0;
-pub const JUPITER_RADIUS: f64 = 71_492_000.0;
+pub const JUPITER_RADIUS: f64 = 69_911_000.0; // refers to altitude with 1bar
 pub const JUPITER_RING_RADIUS: f64 = 229_000_000.0;
 pub const EARTH_RADIUS: f64 = 6_371_000.0;