Post-Demo-2 comfy Starlink launch edition

Livestream: https://www.youtube.com/watch?v=y4xBFHjkUvw
Launch: June 3, Wednesday, 9:25 PM EDT / 1:25 UTC (June 4)
* SpaceX stream begins TWO HOURS from this post, ten minutes before launch *

Probability of violating weather constraints: 40% (https://www.patrick.af.mil/Portals/14/Weather/L-0%20Forecast%203%20Jun%20Launch.pdf?ver=2020-06-03-102245-090)
Backup launch: June 4, Thursday, 9:03 PM EDT / 1:03 UTC (June 5)
Launch vehicle: SpaceX Falcon 9 with first stage B1049.5 (prior launches: Telstar 18, Iridium-8, Starlink-L2, Starlink V0.9)
Launch pad: SLC-40, Cape Canaveral Air Force Station, Florida, USA
First stage landing: On droneship 'Just Read the Instructions'
Fairing recovery: On fairing recovery vessels 'Ms. Tree' & 'Ms. Chief'
Payload: 60 Starlink satellites (one with deployable sunshield visor)
>https://www.starlink.com
>https://www.spacex.com/launches/index.html
>https://space.skyrocket.de/doc_sdat/starlink-v1-0.htm
Payload mass & destination orbit: 15,600 kg (~260 kg / sat); 210 x 366 km @ ~53°; satellites will eventually orbit-raise to 550 km
TLE: https://www.celestrak.com/NORAD/elements/supplemental/starlink-8.txt
Launch viewing guide for Florida: http://www.launchphotography.com/Delta_4_Atlas_5_Falcon_9_Launch_Viewing.html
SpaceX twitter: https://twitter.com/SpaceX
SpaceX launch statistics: This will be the 53rd landed first stage, 35th re-flight of the a first stage, and 86th Falcon 9 launch. It is the 9th SpaceX launch of 2020.