The SpaceX Starlink Launch Timing
The 60 Starlink v0.9 satellites, launched May 2019, have the following characteristics:
Flat-panel design with multiple high-throughput antennas and a single solar array
Mass: 227 kg (500 lb)
Hall-effect thrusters using krypton as the reaction mass, for position adjustment on orbit, altitude maintenance and deorbit
SpaceX plans 24 Starlink launches in 2020 and could have 4 launches in 2019.
This would mean that by the end of 2020, SpaceX would have about 1600 Starlink satellites in orbit. SpaceX could lose 80 (5%).
SpaceX and Elon Musk will be made financially secure by 2023 via the Starlink satellites. They should have the $20 billion per year budget of NASA. If Elon has a 30X on his 54% share of SpaceX, then with Elon would have 30 times $10 billion in 2024 (50% of $20 billion in 2024). This means Elon would be worth over $300 billion without including any valuation for Tesla.