diff --git a/icu4c/source/i18n/astro.cpp b/icu4c/source/i18n/astro.cpp
index d68bba3f40d..457176c8a15 100644
--- a/icu4c/source/i18n/astro.cpp
+++ b/icu4c/source/i18n/astro.cpp
@@ -617,9 +617,9 @@ CalendarAstronomer::Equatorial& CalendarAstronomer::getSunPosition(CalendarAstro
  * @internal
  * @deprecated ICU 2.4. This class may be removed or modified.
  */
-double CalendarAstronomer::VERNAL_EQUINOX() {
+/*double CalendarAstronomer::VERNAL_EQUINOX() {
   return 0;
-}
+}*/
 
 /**
  * Constant representing the summer solstice.
@@ -639,9 +639,9 @@ double CalendarAstronomer::SUMMER_SOLSTICE() {
  * @internal
  * @deprecated ICU 2.4. This class may be removed or modified.
  */
-double CalendarAstronomer::AUTUMN_EQUINOX() {
+/*double CalendarAstronomer::AUTUMN_EQUINOX() {
   return  (CalendarAstronomer::PI);
-}
+}*/
 
 /**
  * Constant representing the winter solstice.
@@ -650,9 +650,9 @@ double CalendarAstronomer::AUTUMN_EQUINOX() {
  * @internal
  * @deprecated ICU 2.4. This class may be removed or modified.
  */
-double CalendarAstronomer::WINTER_SOLSTICE() {
+/*double CalendarAstronomer::WINTER_SOLSTICE() {
   return  ((CalendarAstronomer::PI*3)/2);
-}
+}*/
 
 CalendarAstronomer::AngleFunc::~AngleFunc() {}
 
@@ -1128,9 +1128,9 @@ double CalendarAstronomer::getMoonPhase() {
  * @internal
  * @deprecated ICU 2.4. This class may be removed or modified.
  */
-const CalendarAstronomer::MoonAge CalendarAstronomer::NEW_MOON() {
+/*const CalendarAstronomer::MoonAge CalendarAstronomer::NEW_MOON() {
   return  CalendarAstronomer::MoonAge(0);
-}
+}*/
 
 /**
  * Constant representing the moon's first quarter.
@@ -1138,9 +1138,9 @@ const CalendarAstronomer::MoonAge CalendarAstronomer::NEW_MOON() {
  * @internal
  * @deprecated ICU 2.4. This class may be removed or modified.
  */
-const CalendarAstronomer::MoonAge CalendarAstronomer::FIRST_QUARTER() {
+/*const CalendarAstronomer::MoonAge CalendarAstronomer::FIRST_QUARTER() {
   return   CalendarAstronomer::MoonAge(CalendarAstronomer::PI/2);
-}
+}*/
 
 /**
  * Constant representing a full moon.
@@ -1163,9 +1163,9 @@ public:
   virtual double eval(CalendarAstronomer&a) { return a.getMoonAge(); }
 };
 
-const CalendarAstronomer::MoonAge CalendarAstronomer::LAST_QUARTER() {
+/*const CalendarAstronomer::MoonAge CalendarAstronomer::LAST_QUARTER() {
   return  CalendarAstronomer::MoonAge((CalendarAstronomer::PI*3)/2);
-}
+}*/
 
 /**
  * Find the next or previous time at which the Moon's ecliptic
@@ -1425,7 +1425,7 @@ void CalendarAstronomer::clearCache() {
  * @internal
  * @deprecated ICU 2.4. This class may be removed or modified.
  */
-UDate CalendarAstronomer::local(UDate localMillis) {
+/*UDate CalendarAstronomer::local(UDate localMillis) {
   // TODO - srl ?
   TimeZone *tz = TimeZone::createDefault();
   int32_t rawOffset;
@@ -1434,7 +1434,7 @@ UDate CalendarAstronomer::local(UDate localMillis) {
   tz->getOffset(localMillis, TRUE, rawOffset, dstOffset, status);
   delete tz;
   return localMillis - rawOffset;
-}
+}*/
 
 // Debugging functions
 UnicodeString CalendarAstronomer::Ecliptic::toString() const
diff --git a/icu4c/source/i18n/astro.h b/icu4c/source/i18n/astro.h
index 8717595ef7c..18e6aa55ca9 100644
--- a/icu4c/source/i18n/astro.h
+++ b/icu4c/source/i18n/astro.h
@@ -497,7 +497,7 @@ public:
    * Note: In this case, "vernal" refers to the northern hemisphere's seasons.
    * @internal
    */
-  static double VERNAL_EQUINOX();
+//  static double VERNAL_EQUINOX();
 
   /**
    * Constant representing the summer solstice.
@@ -513,7 +513,7 @@ public:
    * Note: In this case, "autumn" refers to the northern hemisphere's seasons.
    * @internal
    */
-  static double AUTUMN_EQUINOX();
+//  static double AUTUMN_EQUINOX();
 
   /**
    * Constant representing the winter solstice.
@@ -521,7 +521,7 @@ public:
    * Note: In this case, "winter" refers to the northern hemisphere's seasons.
    * @internal
    */
-  static double WINTER_SOLSTICE();
+//  static double WINTER_SOLSTICE();
 
   /**
    * Find the next time at which the sun's ecliptic longitude will have
@@ -596,14 +596,14 @@ public:
    * For use with {@link #getMoonTime getMoonTime}
    * @internal
    */
-  static const MoonAge NEW_MOON();
+//  static const MoonAge NEW_MOON();
 
   /**
    * Constant representing the moon's first quarter.
    * For use with {@link #getMoonTime getMoonTime}
    * @internal
    */
-  static const MoonAge FIRST_QUARTER();
+//  static const MoonAge FIRST_QUARTER();
 
   /**
    * Constant representing a full moon.
@@ -617,7 +617,7 @@ public:
    * For use with {@link #getMoonTime getMoonTime}
    * @internal
    */
-  static const MoonAge LAST_QUARTER();
+//  static const MoonAge LAST_QUARTER();
 
   /**
    * Find the next or previous time at which the Moon's ecliptic
@@ -759,7 +759,7 @@ private:
   /**
    * @internal
    */
-  UDate local(UDate localMillis);
+//  UDate local(UDate localMillis);
 };
 
 U_NAMESPACE_END