Starlink Satellite Versions Explained: v0.9 to V3

The word 'Starlink' covers hardware that has changed enormously. A satellite launched in 2019 and one launched last month share a name, an orbit and very little else — different mass, different antennas, different propellant, different capability.

Here is each generation and the problem it was built to solve.

v0.9 — the prototypes (2019)

Sixty satellites launched in May 2019, weighing about 227 kg each. These were explicitly test articles: no inter-satellite links, limited capability, and never intended to be part of the operational service.

They proved the essentials — that a flat-packed stack could be deployed sixty at a time, that krypton Hall-effect thrusters could raise the satellites to their operational altitude, and that the phased arrays worked. They also proved something SpaceX had not anticipated: the satellites were conspicuously bright, and astronomers noticed within days.

All v0.9 satellites have long since been deorbited.

v1.0 — the first operational generation (2019–2021)

About 260 kg, launched sixty at a time, and the generation that actually carried the first Starlink beta service. Ku-band for user links, Ka-band for gateway links, still no inter-satellite laser terminals — every satellite needed a ground station in view to be useful.

This is the generation where the brightness problem was addressed, in two attempts. DarkSat, launched in January 2020, used a darkening coating on the reflective surfaces. It reduced brightness meaningfully but created thermal problems: a satellite that absorbs light instead of reflecting it gets hot.

VisorSat followed in June 2020 with a different approach — a deployable sunshade that physically blocked sunlight from reaching the most reflective surfaces. It worked better and became standard for the rest of the v1.0 run.

• Mass: roughly 260 kg
• Links: Ku-band user, Ka-band gateway, no laser crosslinks
• Propulsion: krypton Hall-effect thruster
• Notable: DarkSat coating trial, then VisorSat deployable sunshade

v1.5 — lasers arrive (2021–2023)

The important change. v1.5 added optical inter-satellite links — laser terminals that let satellites pass data directly to their neighbours in orbit rather than relaying everything through a ground station.

This removed the constraint that had shaped the whole network. Before laser links, a satellite over the middle of the Pacific was useless: nobody beneath it, no ground station in range. After them, that same satellite becomes a relay node, and the constellation can carry data across regions with no ground infrastructure at all. Polar coverage, mid-ocean maritime service and genuinely remote installations all became possible with v1.5.

Mass rose to roughly 300 kg, most of it the laser terminals and the extra power needed to run them.

Laser crosslinks are the single biggest capability change in Starlink's history. Everything about ocean, polar and deep-wilderness coverage dates from v1.5.

V2 Mini — the capacity jump (2023–present)

Roughly 800 kg, and a substantially different satellite. The name is a concession: the full V2 design was sized for Starship, which was not flying operationally yet, so SpaceX built a smaller version that still fits inside a Falcon 9 fairing.

V2 Mini brought much larger phased-array antennas, significantly more usable bandwidth per satellite, and a switch from krypton to argon propellant. Argon is cheaper and more abundant, which matters when you are launching thousands of thrusters, and the new Hall-effect design produces more thrust.

It also introduced dielectric mirror film for brightness control — a reflective film that redirects sunlight away from the ground rather than absorbing it, avoiding DarkSat's thermal penalty while achieving better darkening than the visor approach.

Because V2 Mini is heavier, fewer fit per Falcon 9 launch — typically in the twenties rather than sixty. The per-satellite capacity gain more than compensates.

• Mass: roughly 800 kg
• Antennas: substantially larger phased arrays, several times the usable bandwidth of v1.5
• Propulsion: argon Hall-effect thrusters, replacing krypton
• Brightness: dielectric mirror film, the most effective mitigation to date
• Per launch: roughly 20–28 on a Falcon 9, versus 60 for v1.0

Direct to Cell — a variant, not a generation

From early 2024, SpaceX began launching V2 Mini satellites carrying an additional payload: an eNodeB — effectively a mobile phone base station in orbit — able to talk to ordinary unmodified handsets on standard mobile spectrum.

These are not a separate generation. They are V2 Mini satellites with extra hardware, launched into the same shells, and they are why an ordinary phone with no special equipment can send a text message from a location with no cell coverage at all.

V3 — the Starship generation

V3 is the design V2 Mini was a compromise against. It is sized for Starship's much larger fairing and payload capacity, which changes the economics completely: far more satellites per launch, each far more capable.

The headline figure is per-satellite throughput roughly an order of magnitude above V2 Mini. The satellites are correspondingly larger and heavier, with much bigger antenna apertures — and antenna aperture is the thing that ultimately sets how much data a satellite can move.

V3 is what makes the second-generation constellation's full capacity target realistic. Reaching those numbers with Falcon 9 alone would require an implausible launch cadence; with Starship it becomes a question of how quickly the rocket can fly.

How to tell which generation you are looking at

Naming is the most reliable clue. Satellites named STARLINK-1xxx and STARLINK-2xxx are generally the v1.0 era; higher numbers are progressively newer. Launch date is more reliable still — the generation in production at a given time is well documented.

Orbital altitude and inclination narrow it further, since different generations were assigned to different shells. And on this site, each satellite's page shows its launch date, current altitude and orbit, which together identify the generation with reasonable confidence.