diff --git a/sim_scenes/solar_system/halley_comet_lib.py b/sim_scenes/solar_system/halley_comet_lib.py
index 6c22c94b87ca8bf8d9381645ec48a0d98660a95f..29b8d22d6a59ded829fa9b727432e9887968ea8c 100644
--- a/sim_scenes/solar_system/halley_comet_lib.py
+++ b/sim_scenes/solar_system/halley_comet_lib.py
@@ -36,21 +36,24 @@ def create_halley_comet(init_velocity, init_position):
     # 每76.1年环绕太阳一周的周期彗星
     halley_comet = HalleComet(
         # size_scale=4e7,
-        size_scale=0.2e8,
+        size_scale=0.15e8,
         init_velocity=init_velocity,
         init_position=init_position) \
         .set_light_disable(True)
     return halley_comet
 
 
-def create_orbit_line(center_body, body, start_time):
+def create_orbit_line(center_body, body, start_time, alpha=0.2):
     if not hasattr(body, "orbital_days"):
         return None
     orbital_days = int(math.ceil(body.orbital_days))
-    points = get_reality_orbit_points(type(body).__name__.lower(), start_time=start_time, days=orbital_days,
+    points = get_reality_orbit_points(type(body).__name__.lower(),
+                                      start_time=start_time,
+                                      days=orbital_days,
                                       segments=100)
     # print(points)
-    orbit_line = create_orbit_by_points(center_body.position, points, line_color=body.trail_color, alpha=0.3)
+    orbit_line = create_orbit_by_points(center_body.position, points, line_color=body.trail_color,
+                                        alpha=alpha)
     return orbit_line
 
 
diff --git a/sim_scenes/solar_system/halley_comet_sim.py b/sim_scenes/solar_system/halley_comet_sim.py
index 997879a1565e95cdd3fd02c13ac1f177c178e513..3af6109ffeeb14782da737cabfa97df64d5fd84a 100644
--- a/sim_scenes/solar_system/halley_comet_sim.py
+++ b/sim_scenes/solar_system/halley_comet_sim.py
@@ -66,7 +66,7 @@ class HalleyCometSim(HalleyCometSimBase):
         # UrsinaConfig.trail_length = 300
         UrsinaConfig.trail_type = "line"
         # UrsinaConfig.trail_length = 152  # 尾巴数量刚刚好
-        UrsinaConfig.trail_length = 135
+        UrsinaConfig.trail_length = 130
         UrsinaConfig.trail_thickness_factor = 3
 
         # UrsinaConfig.trail_length = 180
@@ -370,6 +370,8 @@ class HalleyCometSim(HalleyCometSimBase):
         @param dt:
         @return:
         """
+        if dt.year > 2058:
+            UrsinaConfig.trail_length = 155
         # 更新天体的位置
         self.set_bodies_position(time_data)
         # 更新时钟