Sleepy anons edition

Livestream: https://www.youtube.com/watch?v=8riKQXChPGg
Launch: Saturday, June 13 5:21 EDT / 9:21 UTC (two hours from this post!)

Probability of violating weather constraints: 30% (https://www.patrick.af.mil/Portals/14/Weather/L-1%20Forecast%2013%20JUN%2020%20Launch.pdf?ver=2020-06-12-102735-543)
Backup launch: Sunday, June 14 4:59 AM EDT / 8:59 UTC
Launch vehicle: SpaceX Falcon 9 with first stage B1059.3 (prior launches: CRS-19, CRS-20)
Fairings: Used; one half with CSAT-18/Kacific1, one half with Starlink-L2
Launch pad: SLC-40, Cape Canaveral Air Force Station, Florida, USA
First stage landing: On droneship 'Of Course I Still Love You'
Fairing recovery: On fairing recovery vessels 'Ms. Tree' & 'Ms. Chief'
Payload: 58 Starlink satellites & Planet Labs SkySat-16/17/18
>https://www.starlink.com
>https://www.spacex.com/launches/index.html
>https://space.skyrocket.de/doc_sdat/starlink-v1-0.htm
>https://www.nasaspaceflight.com/2020/06/spacex-launch-first-starlink-rideshare-planet-labs/
Payload mass & destination orbit: ~15,600 kg (~260 kg / sat); 210 x 366 km @ ~53°; Starlink satellites will eventually orbit-raise to 550 km
Starlink-L8 TLE: https://www.celestrak.com/NORAD/elements/supplemental/starlink-9.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 54th landed first stage, 36th re-flight of the a first stage, and 87th Falcon 9 launch. It is the 10th SpaceX launch of 2020.