diff --git a/src/js/satelliteEntity.js b/src/js/satelliteEntity.js
index 153a54592..ae850464e 100644
--- a/src/js/satelliteEntity.js
+++ b/src/js/satelliteEntity.js
@@ -5,6 +5,10 @@ import chroma from 'chroma-js'
 
 class SatelliteEntity {
   constructor(tle = '', options = {}) {
+    const {
+      totalSeconds = 7 * 86400, // 24小时
+      startTime = new Date().toISOString(),
+    } = options
     const [name, tleLine1, tleLine2] = this._checkTle(tle)
     let circle = tleLine2.slice(52, 64)
 
@@ -13,7 +17,10 @@ class SatelliteEntity {
     this.tleLine2 = tleLine2.trim()
     this.satrec = twoline2satrec(this.tleLine1, this.tleLine2)
 
-    this.totalSeconds = 7 * 86400 // 24小时
+    this.totalSeconds = totalSeconds
+
+    this.startTime = startTime
+
     this.stepSeconds = 100
     this.leadTime = parseInt((24 * 3600) / circle)
     this.trailTime = 0
@@ -116,12 +123,13 @@ class SatelliteEntity {
 
   // 创建PositionProperty
   _getPositionProperty(height) {
-    const start = Cesium.JulianDate.fromIso8601(new Date().toISOString())
+    const start = Cesium.JulianDate.fromIso8601(this.startTime)
     const positionProperty = new Cesium.SampledPositionProperty(
       Cesium.ReferenceFrame.INERTIAL
     )
     // const points = []
-    let now = Date.now()
+    // let now = Date.now()
+    let now = new Date(this.startTime).getTime()
     for (let i = 0; i < this.totalSeconds / this.stepSeconds; i++) {
       let sateTime = new Date(now + i * this.stepSeconds * 1000)
       let sateCoord = this.getPositionEci(sateTime)
@@ -133,6 +141,7 @@ class SatelliteEntity {
         i * this.stepSeconds,
         new Cesium.JulianDate()
       )
+
       let cesiumPosition = {
         x: sateCoord.x * 1000,
         y: sateCoord.y * 1000,
@@ -158,7 +167,7 @@ class SatelliteEntity {
 
   // 创建卫星实例
   createSatelliteEntity() {
-    const start = Cesium.JulianDate.fromIso8601(new Date().toISOString())
+    const start = Cesium.JulianDate.fromIso8601(this.startTime)
     const stop = Cesium.JulianDate.addSeconds(
       start,
       this.totalSeconds,
@@ -172,9 +181,9 @@ class SatelliteEntity {
       name: this.name,
       description: this.name,
       show: true,
-      availability: new Cesium.TimeIntervalCollection([
-        new Cesium.TimeInterval({ start: start, stop: stop }),
-      ]),
+      // availability: new Cesium.TimeIntervalCollection([
+      //   new Cesium.TimeInterval({ start: start, stop: stop }),
+      // ]),
       position: this._getPositionProperty(),
 
       path: new Cesium.PathGraphics({
@@ -449,7 +458,7 @@ class SatelliteEntity {
   }
 
   _getPositionFromTime() {
-    const start = Cesium.JulianDate.fromIso8601(new Date().toISOString())
+    const start = Cesium.JulianDate.fromIso8601(this.startTime)
     const pos = this._getPositionProperty(1)
 
     const points = []
@@ -468,7 +477,7 @@ class SatelliteEntity {
   }
 
   createPointUnderTheSatellite(color) {
-    const start = Cesium.JulianDate.fromIso8601(new Date().toISOString())
+    const start = Cesium.JulianDate.fromIso8601(this.startTime)
     const stop = Cesium.JulianDate.addSeconds(
       start,
       this.totalSeconds,