Starlink's "string of pearls"

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rwilkinson
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Starlink's "string of pearls"

Post by rwilkinson » Fri Dec 27, 2019 1:07 pm

As we enter the New Year, prepare for more interference from bright satellite trails:
https://www.bbc.co.uk/news/science-environment-50870117

Shortly after their previous launch in November Cheryl spotted a "train" of lights in the pre-dawn sky one morning, but at the time we weren't sure what they were.
Whilst researching them, I found that Starlink are planning to send up a fresh batch (of 60) satellites every few weeks through 2020 - check out their launch schedule here:
https://www.rocketlaunch.live/?filter=s ... x-starlink

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rwilkinson
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Re: Starlink's "string of pearls"

Post by rwilkinson » Tue Jan 07, 2020 8:17 am

Their latest batch of sixty satellites ("Starlink 2") was launched overnight:
https://www.rocketlaunch.live/launch/starlink-3

The Satflare website has predictions of their positions, which will be updated once their orbits are measured:
https://www.satflare.com/track.asp?q=St ... &sck=1#TOP
There don't appear to be any visual passes (which only occur in twilight) over here in the next five days.

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Re: Starlink's "string of pearls"

Post by rwilkinson » Thu Jan 09, 2020 4:28 pm

Some discussion of the potential impacts of these mega-constellations of satellites on astronomical research:
https://www.bbc.co.uk/news/science-environment-51049746

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Re: Starlink's "string of pearls"

Post by rwilkinson » Sun Jan 12, 2020 2:41 pm

An observer in Fort Worth (Texas) has posted a video of "the train" of new Starlink satellites on the day of their launch:
https://youtu.be/FBbzAFXoloQ
It really does look like an airborne train-load of carriages on this clip!

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Re: Starlink's "string of pearls"

Post by rwilkinson » Sat Jan 18, 2020 8:20 am

There should be some opportunities to see these satellites over the coming week.
Tonight they will be passing over Spain and France a few minutes before 6pm:
2020-01-18 STARLINK Train.jpg
2020-01-18 STARLINK Train.jpg (57.72 KiB) Viewed 110 times
so they will appear low in the South from here:
2020-01-18 view.png
2020-01-18 view.png (76.1 KiB) Viewed 110 times
They will be much higher in the sky later in the week, but the weather forecasts are not promising.

Detailed predictions can be obtained from SatFlare: https://www.satflare.com/track.asp?q=StarLink2#TOP

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Re: Starlink's "string of pearls"

Post by rwilkinson » Mon Jan 20, 2020 2:49 pm

Have a look towards the SW (near to Venus) around 6:40 this evening:
starlink_20jan.png
starlink_20jan.png (74.52 KiB) Viewed 90 times
Where the orbital path is green the satellites will be sunlit, but where it turns grey they pass into eclipse.

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