Fig. 1. Relationship between satellite transit trajectory and geographic location

Fig. 2. Included angel between satellite transit trajectory and geographic north

Fig. 3. Path brightness at different sun zenith angles

Fig. 4. Changes in the observation angle and distance during the satellite transit period

Fig. 5. Brightness of the satellite's magnitude varies with the observation elevation angle

Fig. 6. Measured results of transit satellite magnitude brightness

Fig. 7. Measured results of the transit satellite brightness at 20º elevation