How can we see the transit of satellite chains?

How can we see the transit of satellite chains? Teach you ~

First, open the website:Web links(Fig. 1), click the menu on the left, Import TLEs, and enter the orbit parameters of the satellite chain in the box as follows (Fig. 2):

STARLINK
170002U 19999A 19144.10416667.00000000 00000-0 00000-0 0009
2 70002 053.0000 175.8692 0001467 047.2921 324.9821 15.42070599 01

Then point Import, and you can see the position and orbit of the satellite chain (Fig. 3). There is also a time bar at the bottom of the page. You can either set the time flow manually or jump directly to a certain time (notice that the time is the world time, Beijing time is another + 8 hours), to find out when the satellite will transit from your location.

If the satellites pass by, you have a chance to see them in the sky shortly after dark or near dawn!

Simply check: around 20:07 tonight, the satellite will transit the southeast coast and Taiwan Province (Fig. 4); around 21:45 tonight, it will transit Yunnan, Sichuan, Gansu, Ningxia, Inner Mongolia and other places, Beijing (if the weather is good) has the opportunity to see in the northwest direction (Fig. 5); around 23:20 tonight, it will transit Tibet and Xinjiang (Fig. 6).

So, if it’s good tonight, you can get ready!