diff --git a/doc/user_guide/en/astro_data.adoc b/doc/user_guide/en/astro_data.adoc
index f0b43ec1d..8ee4da3c7 100644
--- a/doc/user_guide/en/astro_data.adoc
+++ b/doc/user_guide/en/astro_data.adoc
@@ -20,6 +20,7 @@ sky background temperature in the direction of the moon, scaled to the
 operating frequency; *Dpol*, the spatial polarization offset in
 degrees; *MNR*, the maximum non-reciprocity of the EME path in dB,
 owing to a combination of Faraday rotation and spatial polarization;
+*Dist*, the distance from your location to the moon, in km;
 and finally *Dgrd*, an estimate of the signal degradation in dB,
 relative to the best possible time with the moon at perigee in a cold
 part of the sky.
diff --git a/doc/user_guide/en/images/AstroData_2.png b/doc/user_guide/en/images/AstroData_2.png
index 521779a16..86274f1d0 100644
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diff --git a/doc/user_guide/en/images/Astronomical_data.png b/doc/user_guide/en/images/Astronomical_data.png
index abf1f2467..e529173bb 100644
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