diff --git a/AstroLib/Include/AsOrbitParam_2023.h b/AstroLib/Include/AsOrbitParam_2023.h
new file mode 100644
index 0000000000000000000000000000000000000000..503d679d8b1ab829633e74189a863a83c6dd0bb4
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+++ b/AstroLib/Include/AsOrbitParam_2023.h
@@ -0,0 +1,20 @@
+#pragma once
+#include "AsOrbitParam.h"
+#include "AsCoordinate.h"
+#include "AsMath.h"
+/// 修正轨道根数转换为位置速度/modified orbit element to cartesian state element.
+/// @Author	Zhang Yu
+/// @Date	2023/4/2
+/// @Input
+/// @Param	modOrb	修正轨道根数
+/// @Param	gm		中心体引力常数
+/// @Output
+/// @Param	pos		位置
+/// @Param	vel		速度
+/// @Return			true=成功; false=输入错误
+//********************************************************************
+bool	AsModOrbElemToCart(
+	const CModOrbElem& modOrb,
+	double gm,
+	CCoord3& pos,
+	CCoord3& vel);
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