Re-re-re-re-re-used booster edition

Livestream: https://youtu.be/jTMJK7wb0rM
Launch: Tuesday August 18 10:31 AM EDT / 14:31 UTC
Probability of violating weather constraints: 20% (https://www.patrick.af.mil/Portals/14/Weather/Falcon%209%20StarlinkV1_0-L10%20L-1%20Forecast%20-%2018%20Aug%20Launch.pdf?ver=2020-08-17-074812-500)
Backup launch: ~+1 day
Launch vehicle: SpaceX Falcon 9 with first stage B1049.6 (prior launches: Starlink-L7, Starlink-L2, Starlink V0.9, Iridium-8, Telstar 18V)
Launch pad: SLC-40, Cape Canaveral Air Force Station, Florida, USA
Fairings: Used, from Starlink-L3
Fairing recovery: Probable
First stage landing: On droneship 'Of Course I Still Love You'

Payload: 58 SpaceX Starlink satellites & Planet Labs SkySats 19, 20, 21
Payload mass & destination orbit: ~15,600 kg (~260 kg / Starlink sat); 210 x 366 km @ ~53°; Starlink sats will eventually orbit-raise to 550 km
Starlink-L10 TLE: https://www.celestrak.com/NORAD/elements/supplemental/starlink-11.txt
>https://www.starlink.com
>https://www.spacex.com/launches/index.html
>https://space.skyrocket.de/doc_sdat/starlink-v1-0.htm
>https://www.planet.com/pulse/skysats-19-21-to-launch-on-spacex-falcon-9-rideshare-mission/

Launch viewing guide for Florida: http://www.launchphotography.com/Delta_4_Atlas_5_Falcon_9_Launch_Viewing.html
SpaceX twitter: https://twitter.com/SpaceX

This will be the 58th landed first stage, 39th re-flight of a first stage, and 91st Falcon 9 launch. It is the 13th SpaceX orbital launch of 2020. This is the first sixth flight of a Falcon 9 booster.