# µDragonfly Bus
*bus . products*

100 kg class satellite bus designed for electro-optical imaging payloads. Flying on EOSSAT-1 (ZA-008, launched January 2023) as the first operational mission, carrying two DragonEye cameras at 178 kg total satellite mass. Accommodates up to 100 kg payload mass in a 500 mm diameter envelope. Solar array peak power 220 W, orbit average power 140 W, energy storage up to 600 Wh. X-Band data downlink 2.5 Gbps peak. Pointing stability <0.0015 deg/sec (3-sigma), pointing accuracy <0.01 deg (3-sigma), slew rate up to 4 deg/sec. Xenon electric propulsion for orbit maintenance. Design life 5 years. Three units can launch side-by-side in a 2.2 m payload fairing.

## Specifications
- **product status**: operational
- **manufacturer**: dragonfly
- **bus**: {"platform_class":"mini"}
- **deployment context**: orbital
- **entity type**: bus
- **last verified date**: 2026-05-28
- **verified by**: sw
- **claim status**: unclaimed
- **provider**: dragonfly
- **attributes**: {"kind":"bus","product_status":"operational","manufacturer":"dragonfly","description":"100 kg class satellite bus designed for electro-optical imaging payloads. Flying on EOSSAT-1 (ZA-008, launched January 2023) as the first operational mission, carrying two DragonEye cameras at 178 kg total satellite mass. Accommodates up to 100 kg payload mass in a 500 mm diameter envelope. Solar array peak power 220 W, orbit average power 140 W, energy storage up to 600 Wh. X-Band data downlink 2.5 Gbps peak. Pointing stability <0.0015 deg/sec (3-sigma), pointing accuracy <0.01 deg (3-sigma), slew rate up to 4 deg/sec. Xenon electric propulsion for orbit maintenance. Design life 5 years. Three units can launch side-by-side in a 2.2 m payload fairing.","sensor":null,"bus":"{\"platform_class\":\"mini\"}","ground_segment":null,"launcher":null,"analysis_service":null,"deployment_context":"orbital"}

## Editorial
uDragonfly Bus is a 100 kg class satellite bus for electro-optical imaging payloads.[^satcatalog-udragonfly] eoPortal identifies EOS SAT-1 as flying a uDragonfly bus with two DragonEye cameras after its January 2023 Falcon 9 Transporter-6 launch.[^eoportal-eossat1]

The bus accommodates payloads in a 500 mm diameter envelope, but public materials give three payload-capacity figures: 60 kg in 2021 product-launch coverage, 70 kg in the SatCatalog specification block, and 100 kg in the SatCatalog overview.[^spaceinafrica-dragonfly-products][^satcatalog-udragonfly] Published power figures include 220 W solar-array peak power, 140 W orbit-average power, and up to 600 Wh of energy storage.[^satcatalog-udragonfly]

The platform specification gives 2.5 Gbps peak X-band downlink, pointing stability below 0.0015 deg/sec, pointing accuracy below 0.01 deg, slew rate up to 4 deg/sec, xenon electric propulsion for orbit maintenance, a five-year design life, and side-by-side launch accommodation for three units in a 2.2 m payload fairing.[^satcatalog-udragonfly]

## Compositional position
- eossat-1 (missions) --[mission_buses]--> µDragonfly Bus

## Sources
- [satcatalog-udragonfly] | µDragonfly Bus - SatCatalog | https://www.satcatalog.com/component/dragonfly-bus/ | tier=community | accessed=2026-05-28
- [eoportal-eossat1] | EOS SAT-1 (AgriSat-1) - eoPortal Mission Profile | https://eoportal.org/satellite-missions/eos-sat-1 | tier=community | accessed=2026-05-28
- [spaceinafrica-dragonfly-products] | Dragonfly Aerospace Launches New Satellite Products - Space in Africa | https://spaceinafrica.com/2021/10/26/dragonfly-aerospace-launches-new-satellite-products/ | tier=third-party | accessed=2026-05-28

---
Source: https://eo-atlas.org/products/bus/udragonfly
Maintainer: SpectraWorks B.V. (CC-BY 4.0)