Week in Space Data, every Friday.

Short answer: Do the raw arithmetic and a 1U CubeSat is almost free to launch: the CubeSat Design Specification (Rev. 14.1) allows up to 2 kg for a 1U (earlier revisions, under 1.33 kg), and at SpaceX's $7,000 per kilogram rideshare rate that is $14,000 of launch mass ($9,310 at 1.33 kg). But SpaceX sells a 50 kg minimum for $350k, not single kilograms, so a 1U flies as one slot in a dispenser that a broker has bought and subdivided. Brokers quote that slot per mission and publish no price list; the difference from the raw-mass figure is the dispenser, the integration campaign and the broker's margin.
List and rideshare prices as of 2026-10-11. Figures track the launch cost guide; contract prices vary.
| Option | Price | Notes |
|---|---|---|
| Launch mass only: 2 kg (Rev. 14.1 limit) at the rideshare rate | $14,000 | Arithmetic, not a product: SpaceX sells a 50 kg minimum, not single kilograms |
| Older limit (1.33 kg), same rate | $9,310 | CubeSat Design Specification Rev. 13 limited a 1U to under 1.33 kg |
| Rideshare minimum purchase (50 kg) | $350k | What a broker buys from SpaceX and subdivides across many CubeSats |
| 1U dispenser slot via a broker | Quoted per mission | No broker publishes a price list; dispenser, integration and margin explain the gap from the raw-mass figure |
| Dedicated Electron (the whole rocket) | about $9.2M | Rocket Lab publishes no Electron list price. Its launch revenue averaged about $9.2M per launch in the first half of 2026 (Electron and HASTE together). Absurd for one 1U unless you are flying dozens. |
Because $7,000 per kilogram is a rate, not a menu item. SpaceX's rideshare minimum is 50 kg for $350k; below that you buy a slot in a dispenser from a broker who has aggregated many small payloads, and the slot price includes the hardware and paperwork that make a 1U flyable.
Effectively never. Even the smallest dedicated launcher carries hundreds of kilograms, so a single 1U would be paying for a rocket it uses a fraction of a percent of. Rideshare dispensers exist so that 1U-class payloads can share.
By unit size, target orbit, deployment options and how late you book, not by kilogram. Brokers quote per slot, and eligible US education teams can apply to NASA's CubeSat Launch Initiative for low-cost access to space.
One email on Fridays: launches flown, funding rounds, hiring and schedule slips from our own trackers, plus next week's launches. Free, and one click to leave.
Week in Space Data on Fridays, SpaceNexus AM on weekday mornings if you tick it. Unsubscribe anytime.
Every figure on this page comes from one of these. Prices change; dates show when each was published or read.